RAID10 HDD or RAID10 SSD?
- Thread starter 5gbps
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If I have to choose between these two option although SSD sound's better.
But one thing you have to consider that when a typical VPS user looking at these offer he is rarely able to hit RAID 10 HDD bottleneck until the node is heavily oversold (non encoding users).Plus with this much difference in offered disk space I am sure most people will tend to go with HDD option.
Also if these server are used for seeding or leeching than definitely users will go for bigger HDD(you know why
).The main idea I want to convey is SSD are still a bit costly for main stream hosting but they are definitely important nowadays in special tasks.
Have you considered SSD chaching instead of having them in RAID 10?
My 0.02$
But one thing you have to consider that when a typical VPS user looking at these offer he is rarely able to hit RAID 10 HDD bottleneck until the node is heavily oversold (non encoding users).Plus with this much difference in offered disk space I am sure most people will tend to go with HDD option.
Also if these server are used for seeding or leeching than definitely users will go for bigger HDD(you know why
).The main idea I want to convey is SSD are still a bit costly for main stream hosting but they are definitely important nowadays in special tasks.Have you considered SSD chaching instead of having them in RAID 10?
My 0.02$
@5gbps.com, it totally depends on what type of customer base you are looking into. Of course SSD will out perform normal HDD. But, the main problem comes when you target heavy download/upload users
1) The more data you write, the life of SSD become short.
2) Atm there is no TRIM support for SSD in H/W Raid or Raid10. Because of this you can see a 10-20% performance decrease within first few days.
3) 20GB SSD space won't be attractive to download/upload users. They need more space. In short they want lighting performance, huge space, unmetered B/W and willing to pay the least possible price.
Then, the big question pops out. What is the exact use of SSD drives ?
To be frank SSD is designed to focus on low latency and high random read/write. According to current prices its a good replacement for SAS 15K drives.
Eg usages: Heavy Databases, Front End cache for streaming servers etc.
1) The more data you write, the life of SSD become short.
2) Atm there is no TRIM support for SSD in H/W Raid or Raid10. Because of this you can see a 10-20% performance decrease within first few days.
3) 20GB SSD space won't be attractive to download/upload users. They need more space. In short they want lighting performance, huge space, unmetered B/W and willing to pay the least possible price.
Then, the big question pops out. What is the exact use of SSD drives ?
To be frank SSD is designed to focus on low latency and high random read/write. According to current prices its a good replacement for SAS 15K drives.
Eg usages: Heavy Databases, Front End cache for streaming servers etc.
A note regarding hardware raid.
Without TRIM you will be lucky to get a 6 month lifetime out of SSDs. Although RAID10 is perfectly fine to do with software raid (its parity where the real benifits to hardware are), you should be able to get 80-90% performance out of software.
It is theoretically possible for software raid to be setup with TRIM. I dont know how though.
A note to anyone considering this, most affordable RAID cardss were made pre SSD's and were not made for the amount of throughput one can produce, keep this in mind.
Without TRIM you will be lucky to get a 6 month lifetime out of SSDs. Although RAID10 is perfectly fine to do with software raid (its parity where the real benifits to hardware are), you should be able to get 80-90% performance out of software.
It is theoretically possible for software raid to be setup with TRIM. I dont know how though.
A note to anyone considering this, most affordable RAID cardss were made pre SSD's and were not made for the amount of throughput one can produce, keep this in mind.
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