Hello, I found an interesting article about new solutions that will be used in magnetic drives. I think it's worth knowing about it because its introduction is planned this year. I'm also curious about your opinion on the development of these technologies and how they relate to SSDs.
Abstract:
For most of the past 50 years, the areal density of hard disks—a measure
of how many bits of data that engineers can squeeze into a given
area—increased by an average of nearly 40 percent each year. Lately,
though, that rate has slowed to around 10 percent. Everyone who works on
magnetic storage is well aware of this problem, but only in the past
year or so have executives from Seagate Technology and Western Digital,
the leading manufacturers of hard drives, very publicly split on how to
solve it. In back-to-back announcements in October 2017, Western Digital
pledged to begin shipping drives based on what is known as
microwave-assisted magnetic recording (MAMR) in 2019, and Seagate said
it would have drives that incorporate heat-assisted magnetic recording
(HAMR) on the market by 2020.
Articles:
https://spectrum.ieee.org/computing/hardware/lasers-vs-microwaves-the-billiondollar-bet-on-the-future-of-magnetic-storage
https://www.cloudberrylab.com/resources/blog/hamr-vs-mamr-new-hdd-technology/
Questions:
1. Is it worthwhile to continue investing in the development of magnetic disk technology?
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteIn my opinion it is waste of time, there is so many other technologies that have much brighter future. Technology moves fast forward, there is no point to stand in the same place.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I have never heard about these technologies before.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Solid-state drives (SSDs) have reached a tipping point. Compared with traditional spinning hard disk drives (HDDs), SSDs have much lower latency, as much as 1000 times the number of I/Os per second (IOPS) and three to five times the throughput. Saving money and boosting performance aren't the only wins for SSDs.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I have already replaced magnetic drives with SSD.
Thank you for your answer. I also think that SSDs are the future, but maybe we will see the companies mentioned in the article have not yet said the last word.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteInvesting nowadays in the development of magnetic technology is rather pointless. Data media based on memory chips are much more stable. It's harder to damage them even mechanically.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I haven't heard about these technologies. It's hard to prophesy which will come and go. It was the same with PCI and Local Bus. Finally, after a few years, won the PCI and for a long time we used this connector in our PCs.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Of course, SSD drives will displace magnetic. Basically, it's happening right now. More and more companies are replacing magnetic disks on SSD in their systems. The access time to data is important here.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
Unfortunately, I still use magnetic disks on most computers. I plan to change to SSD soon.
Thank you for your answer. Of course, access time for servers is very important, so I also believe that SSDs will replace HDDs. At the beginning probably in the most important nodes, but also in the future the remaining ones.
DeleteInteresting topic, and it touches on a technology very close to all of us, computer users.
ReplyDeleteThe appetite for storage is growing, we'd like to keep everything and never compromise on quality.
1. Is it worthwhile to continue investing in the development of magnetic disk technology?
That depends. I wouldn't stick to the hard drives just because of nostalgia, but they are still the cheaper technology. Paired with larger and larger SSD-like caches (or some similar technologies like Optane), they may still hold their ground for some time. Especially video data is quite HDD-friendly (sequential access, managable bandwidth requirements.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
No, I've learned about them just today. I don't know which technology wins, but just the fact that there are two competing ideas could lead to a stalemate, or a third winned, which would be the semiconductor storage (solid state memory). Compare it to the optical memories - HD-DVD vs Blue-ray. Maybe the latter became the de-facto successor of DVD, but a BR drive is no longer a necessity like a DVD drive was in its prime. I believe what the authors suggest - that MAMR is "better", but in PC technology often "worse is better". (E.g. the microwave solution could be complicated and expensive)
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Yes, they can, and the process is already underway. Disadvantages of SSDs as of today are still price and durability (write cycles). However, one-time sequential writes (like recording large videos) is a case which favours HDDs. The distance is getting smaller though. SSDs seem to have a more predictable life-cycle, we know how much data can be written to an SSD before it dies.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
On this machine I have only a magnetic hard drive, which I would happily replace with an SSD, but I don't want to give up capacity, or pay up to match it with an SSD. At work I have a large HDD + big SSD combo, and I try to use the SSD as much as I can. Boot times, program opening etc - it all just works better. An HDD is needed for large data, like datasets for Deep Learning. I often generate much data, store it on SSD, analyze and then delete - so much more data has gone through it than its capacity - it's in the tens of terabytes. And after a year it has only 92% SSD Life left.
Thank you for your answer. I also think that this is a very interesting topic and I found it by accident looking for an article that I could touch upon here :) Maybe video data will be what will cause further development of magnetic disk technology.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteI think yes, but the returns are diminishing. It reminds me of enormous complexity (both analog electronics and mechanical parts) of late VHS video players, which strived to provide stable still-frame picture. All this engineering effort is now pointless as we switched to DVDs and BlueRays.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I think the comparison to LocalBus/PCI or HD-DVD/Blue-Ray misses a point that HAMR vs MAMR is but a implementation detail, does not need external changes. One can go to the shop, buy a bunch of ones and others and install alongside in one machine. That was not the case with optical discs or interface standards, as those locked in the customer.
I'd bet on HAMR success, as it is closer to hit the market.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
In servers located in datacenter, SSD drives shine compared to HDDs: lifetime is more predictible now, this allows to deal with failures in more predictible way, and also heat produced is much lower. Non-existent seek times allows easy operation of multiple concurrent loads.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I use SSHs as main system drives, and HDDs for backup and large data storage.
Thank you for your answer. I was curious about the issue of lifetime in server applications, because many people think that SSDs are worse in this matter.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteI think that nowadays we have other better technologies like SSD. I am not an expert in this field so I may do not see some importnace and advantage of magnetic disks.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
No I havent heard about these technologies. Usually I read about such technolgies only when I'm going to buy something new. Formy point of view itis hard to say which technology has a better chance. We will see ina future if any of them will be developed.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
I think that it is possible. SSD are faster which is their advantage but on the other hand they have higher prices.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
Yes I am using magnetic drivers. I think thay are still popular and used in many computers even modern one.
Thank you for your answer. Currently, the prices of SSDs are steadily falling and you can buy decent capacity at a reasonable price. I recommend to try, who once use the SSD doesn't want to return to HDD anymore :)
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteAccording to the article I read, the density of hard disks used to be increased up to 40% each year but it has increased recently only up to 10% per year. It seems to be a problem how to solve it but there is the hope in HAMR and MAMR technology. You also wrote that international companies applied and developed this technology so why not to invest in the development of magnetic disk technology
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I have not heard about the mentioned technology before. HAMR and MAMR are the type of magnetic storage. HAMR is heat-assisted magnetic recording and it is based on temporarily heating the disk material during writing, which makes it much more receptive to magnetic effects and allows writing to much smaller regions. MAMR is microwave-assisted magnetic recording which is based on “spin torque oscillator” used to generate a microwave field that increases the ability to record data at ultra-high density without sacrificing reliability. I am not very interested in hardware so it is hard to say for me which technology MAMR or HAMR has a better chance of dissemination but I saw that comparison between HAMR and MAMR and I think that 2019/2020 year should show, which technology is more promising for future.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
As I wrote, I am not an expert of disk technology but I think that replacing SSD magnetic drivers in server applications has advantages and disadvantages. The SSD disk is faster than HDD because of fragmentation of data. The SSD disk consumes less power than typical HDD (needs more power input to rotate the metallic platter and move that magnetic read head). The HDD produces noise while in operation. The spinning of the metallic platter and the back-and-forth movement of the magnetic read head create mechanical noises. The SSD disk are more durable than HDD. On the other hand, there are disadvantages of SSD as well. The HDD has higher storage capacity than SSD. The last one advantages is longevity in terms of read-and-write cycle is another worthy advantage of hard disk drives. To sum up, I am not convinced that it is a good idea to replace magnetic disks with SSD. The HDD disk give more opportunity for servers.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I do not use a magnetic drive because I replaced it with SSD in my laptop. I am very satisfied because my laptop starts operation system faster compared with the time when I used HDD disk. The operation reading and writing is faster as well.
Thank you for your answer. Very nice analysis of the advantages and disadvantages of using SSDs in server rooms, I'm curious how it will develop in the years to come.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteThe development of traditional disk technology is possible. Thanks to technologies that can only be implemented today, HDDs will serve us for many years to come. Moreover, in a relatively short time their capacity will grow to gigantic sizes by today's standards. The capacity of HDDs is constantly growing and they are still the foundation of the storage systems used in the company's data centers. SSDs are currently the only competition for them, and it should be noted that flash memory technologies are developing much faster and not only in terms of performance, but also in terms of capacity, SSDs have recently started to dominate over HDDs, but this development has a cost.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
The key technology to ensure everything that has been mentioned is HAMR (Heat-assisted Magnetic Recording). It was developed by Seagate's engineering team. HAMR stands for Heat Assisted Magnetic Recording, a technique that simply involves heating up the surface of the platter to reduce the magnetic resistance and be able to store data on even less space than before. To achieve this, Seagate has mounted a miniature diode laser on each transducer. This increases capacity by heating the media with a laser beam at the point where the data bits are to be saved. Once heated, the drive is easier to write to, and then fast cooling stabilizes the stored data. As a result of heat-assisted recording, the recording density increases significantly. The first such media will be available in stores in 2020.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Servers with SSDs use different kinds of storage media than those found in laptops or desktops. The difference is in the size of the so-called spare area. When a cell reaches the write cycle limit or is otherwise damaged, the data is copied to the cells in the spare area. In consumer SSDs, this backup space is typically 7% of the entire drive. In the case of media used in servers, it is as much as 30% of the surface area, which significantly extends the life of professional solid state drives. Despite this, administrators in hosting companies do not wait for the moment when the drive will be replaced. The signal to be replaced is received from the media itself.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I use hybrid drives. This technology represents a reasonable compromise in terms of performance, capacity and price between HDDs and SSDs. Solid State Hybrid Drives (SSHDs) are equipped with additional flash memory and their firmware with a special Multi-Tier Caching (MTC) algorithm to select the data to be copied to flash memory, which ensures that the most read files or parts of files are copied to solid state media, which is much faster to read than trying to access the files on the disk. The controller of the hybrid drive also keeps track of the frequency of reading files already in the SSD memory - if it is too low for any of them, it will be deleted and replaced by other, more frequently read files.
Thank you for your answer. I wasn't aware of the differences in SSDs used in server applications. Thank you for mentioning hybrid drives I forgot about them completely, although for a long time I also used them.
Delete
ReplyDeleteHello,
Thank you for an interesting subject. According to your questions:
1. Is it worthwhile to continue investing in the development of magnetic disk technology?
I thought- no, it should be "memory from the past", because have much more efficient and robust solutions. However, I was wrong, according to the researchers.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I've never heard of them before. After your article, I can see how immature the technical development of MAMR is, and I don't know it's not too late though to compete with HAMR?
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution?
A large variety of hosting providers is already offering SSD right now. The main reason is the time of data access.
4. Do you still use magnetic drives for your applications or do you already replace them with SSDs?
I did it on my 5 years old laptop about three months ago, and I can see a tremendous upgrade of speed.
Thank you for your answer. Nowadays, replacing an old drive is what allows you to feel a big increase in performance. And fortunately, SSDs are getting cheaper and more and more people can afford them.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteI think so. Magnetic disks are solid carrier with a very long life. Using another technlogy will incrase drive capacity. Today magnetic disks are cheaper then SSD disks. The belief of top firms productings disks clearly shows that is still worth investigating in these carriers.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I don’t remember hearing anything about these technologies. Currently, I have too little time to follow the development of new technologies. The topic is very interesting. I found an article on the Internet about these technologies:
https://antyweb.pl/western-digital-mamr-40tb/
After reading the article, it seems to me that MAMR can gain more popularity, because it has many advantages (using the same materials for the production of disks as before, no degradation of the disk). Unfortunately, HAMR supported by Segate degrades the carrier, which will affect the lifespan of the carrier.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
I think that using SSD drives in server solutions as a data carrier is not a very good idea. Currently, prices for SSDs are relatively expensive and their capacity is smaller than magnetic disks. The durability of the SSD medium is limited. This disk has a limited number of write and read cycles. I think SSDs can be a complement to magnetic drives and act as a cache for storing data that is often used and fast access is required.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I still use magnetic drives for everyday work. Maybe soon I will use SSD as system drive.
Thank you for your answer. As I thought, opinions on the use of SSDs in servers are divided. I highly recommend replacing the system drive with an SSD, the increase in the speed of programs and the system is unimaginable.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteIn my opinion it is pointless. Researchers should focus on Solid-State Drives (SSDs). The future belongs to this technology. I think that we need only time to make this technology more affordable.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
No, I haven’t heard about those two technologies. I suppose that the MAMR technology may become more popular because it seems to be more explored so far. In addition, the developer announces an earlier introduction to the market than the HAMR.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Of course. In my opinion SSD should replace magnetic hard drives. The main advantage of such solution will be a faster access to the data. A disadvantage of this technology is the lower number of access cycles but I think that it will be improved in the near future.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I have already replaced all my magnetic hard drives with SSDs.
Thank you for your answer. I agree with you, companies should invest more in the development of SSD technology instead of developing magnetic disk technology.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteTaking in to consideration that humankind is producing large amount of data each day it is worth to invest resources in development or optimization of any disk technology
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I do not have heard about this technology. It is hard for me to determine which one is better.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
SSD has already replacing magnetic dries in server applications. Most of cloud providers are offering SSD powered VMs and PaaS solutions, but this is good only when read/write speed matters. This could be efficient for application logic, not for data storage.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I have ssd and fusion drive by myslef
Thank you for your answer. We'll see how SSD technology develops, which can further reduce the price, increase capacity and durability. Then perhaps HDDs will be completely replaced.
DeleteSSDs have many advantages, but still HDDs are much cheaper and have much greater capacity. I still have a few and considering buying a next one.
ReplyDeleteI think that any technology that would cheaply store more data and was compatible with existing interfaces, i.e. people wouldn't have to replace all of their hardware to have other disk could disseminate quick and possibly replace HDDs.
Thank you for your answer. I'm also using HDDs to store more data, but I hope that the technology will grow to the point where larger capacity SSDs will become the standard.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteCurrently we do not have any other disk technology with comparable cost of 1 TB, so I think without any cheaper alternative it is worth still invest in magnetic disk as each year we need more and more disk space to store all data.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I am really not an expert in this field so I never heard about this technology previously, but after quick googling I found, that companies invested more in HAMR and HAMR is closer to release, so soone we should see this technology in stores.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Both types of disks had some advantages and usually in server application we can use both or choose one better fit to our solution. If we need to perform a lot of small reads then SSD is a good idea, but if we want to store petabytes of data for future use or as an archive, then using SSD is pointless and a waste of hugh money.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I am usually use both types of disk, SSD for cache and magnetic disc for storing and archiving. With virtual machine in cloud it is really easy to combine both types of storages in your application.
Thank you for your answer. I think that the coming years will be the interaction of these two data storage technologies, in the future we will see if one of them will replace the other completely.
Delete1. I do not think so. We are constantly hearing about the superiority of SSDs over magnetic disks, so people will rather choose SSD disks.
ReplyDelete2. I have not heard about these technologies before. After reading the article, it seems to me that the HAMR technology has a better chance of success, because it will be introduced to the market more quickly and has better prospects to increase the high bit density. The only question is whether the disks made with HAMR technology will have a long life. Laser technology can significantly shorten the life of the disk due to the occurrence in the magnetic material of stresses caused by excessive heat.
3. Honestly, I have no idea. SSDs are much faster, quieter and need less power than magnetic disks. On the other hand, HDD disks are much more durable and allow for multiple reading and writing of information. They are also much more durable. Servers must process huge amounts of data and be reliable so that magnetic discs play their perfect role.
4. At the moment I have one laptop with a magnetic drive and one with an SSD drive. A laptop with an SSD drive works much faster and gets hot less. However, I am used to HDDs personally, so usually I do not mind slower system operation. In addition, I have more space on a laptop with a magnetic disk.
Thank you for your answer. These new technologies sound interesting in theory with time we will see how it will be in practice.
DeleteThis comment has been removed by the author.
ReplyDelete1. Is it worth investing in the development of magnetic disk technology?
ReplyDeleteSSD disks are a newer technology and eliminate a number of disadvantages that magnetic disks have. They are faster and more resistant than them. Magnetic drives are approaching the maximum of their capabilities. Their further development requires major construction changes to at least get closer to the possibilities offered by SSDs.
2. Have you heard about these technologies already? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
I have never heard about these technologies, but after what I've read, it seems to me that HAMR has a slight advantage over MAMR due to the greater investment in its development.
3. Can SSDs replace magnetic drives in server applications? What are the advantages and disadvantages of such a solution.
In some cases this is already the case. The selection of discs is not accidental in this type of solutions. However, if the server has to overwrite the received data many times, the use of SSD disks seems to be pointless (less lifespan for multiple writes).
4. Are you still using magnetic drives for your own applications or are you already replacing them with SSDs?
As above, the selection of discs is not accidental (or at least it shouldn't been accidental). In more case I use magnetic HDD drive.
Thank you for your answer. I understand that you are using HDDs because there is such a need. When working on large amounts of data, it is usually stored on HDDs, because high-capacity SSDs are still relatively expensive.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteProbably yes, unfortunately it is difficult to guess what will be popular in the future, I think the development of this technology is no longer as relevant as before.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
Unfortunately, I do not know these technologies.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution
I think yes, today SSD is the future that surpasses HDD, SSD has much better performance, it is much faster compared to HDD
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
Unfortunately, I still have CDD, but I plan to replace them with SSD
Thank you for your answer. The SSD market getting better and better and this is now one of the easier and cheaper investments that can speed up our hardware.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteI guess it would be much wiser from financial and scientific point of view to focus on more promising technologies. It's always better to move on rather than stay in one place.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
No, not really.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
Of course, they can. The main disadvantages of this solution are price and durability, but I guess those obstacles will soon be overcome/
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I' ve already replaced magnetic drives with SSD.
Thank you for your answer. I agree that we should focus on more promising technologies.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteWhy not? I think this technology has still something to show us and surprise us.
Of course we need fast SSD disc for our computers to work with data, although we need space for keep this data after work.
In our laboratory we need several dozen of terabytes for data storage and request will be grow.
I think MAMR is very important and necessary development.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
Like Andrzej mentioned above, HAMR technology, wich is developed by Seagate,
is based on mounting on the head a miniature laser that will heat our "bit" to a temperature of 400-700 degrees Celsius.
It allows saving the data by dropping magnetic resistivity but high temperature has affects on disc durability.
MAMR uses a microwave generator with a frequency of 20-40 GHz. Microwaves give a similar effect as heating in HAMR technology, but they don’t have its issues. Due to the microwave field, resistance to magnetization also decreases, and temperature of the medium doesn’t increase.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
I don’t know, it depends on server apps. To be honest I used SSD disc in Azure and i haven’t seen any difference. I suppose that the price and capacity would be disadvantages of SSD discs and faster accesses for the data would be main advantage.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I use both – magnetic hard drive and SSD, and of course system and programs start faster on SSD, also my data is saving faster, but when i need space - HDD is still irreplaceable.
Thank you for your answer. At this point, if we need to store large amounts of data and we want a fast operating system, using two disks seems to be the most reasonable.
Delete1. Is it worthwhile to continue investing in the development of magnetic disk technology?
ReplyDeleteI think that it is worth investing in the development of magnetic discs. They are cheaper and slightly slower than SSDs, but home users still choose them as data storage drives. In addition, it is currently very popular to store data in the cloud, and its speed depends on the speed of your connection.
2. Have you heard about these technologies before? What do you think, which HAMR or MAMR technology has a better chance of dissemination and why?
Unfortunately, I have not heard about these technologies. I believe MAMR technology is more likely because it does not use disc heating. The rapid rise in heat is harmful to the data stored on the disks.
3. Can SSDs replace magnetic drives in server applications? What will be the advantages and disadvantages of such a solution.
SSD disks are already replacing HDD disks in server drives. This has a large impact on the speed and durability of data, which in the case of server applications are important.
4. Do you still use magnetic drives for your own applications or do you already replace them with SSDs?
I have an SSD drive only to run the system and applications that load the most disk. On the other hand, I keep the data on the magnetic disk.
Thank you for your answer. I'm also curious how it will be with the lifespan of HAMR drives.
DeleteHi!
ReplyDelete1. In my opinion it’s not use to turn back, while the world goes forward. I am not specialist in the hardware issues, but as general rule, I am strictly and always for testing new technologies, instead of living with the old ones.
2. As I’ve written above, I cannot say anything impressing in this respect. In fact the technology is being developed so fast, it i8s really difficult to be online with all of news in one specialization, so in other ones I trust the other people.
3. I am not disk-specialist, but you’ve motivated me to read about it :-)
Can the SSDs win over HDDs in server applications? It’s an application specific answer. It depends upon I/O density of the workload, the number of I/Os per GB of data. There are some analysis of different workloads to understand what level of application I/O heat (IOPS per GB) are needed to justify a SSD.
Disks have an abundance of capacity and are short of IOPS so, on random IOPS intensive workloads, the limiting factor using HDDs will be IOPS. SSDs have an abundance of IOPS and are short of capacity, so the limiting factor using SSDs will be capacity. SSDs are cost effective for your application when the cost of the disk farm adequate to support the IOPS you need is more than the SSD farm required to support the capacity you need. As a formula:
current#hdd * hdd$ > CapacityNeeded / Capacity_ssd * ssd$
4. I’ve already replaced them :-)
BR,
Marta