24 SSD's in Raid

Game Over

Game Over

New member
Im new here and I would be surprised if someone has not already put this one up here but thought I would just in case. I plan on using several small SSD's in Raid on my next Rig and love this video. I will be keeping mine 6 or less, but 24 is just amazing.

[media]http://www.youtube.com/watch?v=96dWOEa4Djs[/media]
 
Imho I wouldn't even bother to put SSDs in raid at all. Simply, because no Trim and garbage collection is going to get through to the single SSD so performance is going to be amazing for like two days and after it is just going to degrade like crazy. Also the IBIS and especially the Revodrive aren't that good either for the same reasons. They are severall SSDs in a Raid 0 configuration just on one card. You don't want to have to deal with all the problems of those SSDs degrading. However it is kind of cool just to see the amazing speeds that are possible.
 
/waits for AlienALX
laugh.gif
 
Xochielt said:
What about these special "RaidReady"-SSDs?
Click to expand...

Well I have to say I don't know for sure but I have yet to hear about any Raidcontroller that passes garbage collection through, which doesn't mean that it is impossible. Just be careful and read some reviews about those products, that also test the SSD "long term".
 
That sucks to hear, I looked it up and found some new SSD with trim firmware perform great

Example...

Intel X25-M 160GB Gen2 / Intel

The Intel X25-M 160GB’s trim performance is simply superb right across the board, with almost none of the performance degradation we saw with the drive in its dirty pre-trim state. Sequential read and write speeds are completely unchanged from the drive in its new state despite over 1TB of data having been written to it and the same is true in every other test – there’s almost no difference between the drive from its new to heavily used state once we enable trim.

Pleasingly, the drive actually gets faster with the new firmware due to the improved ATA commands, with sequential write speeds 23MB/s faster in AS SSD and 22MB/s faster in ATTO 1,024KB. A fantastic result all round and a mandatory update for X25-M users.



But it also goes on to say that Trim at this point does not work with Raid Setups.. Yet.

Also It was mentioned the trim firmware in the tests was for windows 7. So dont know if that would be a mandatory OS for ssd trim right now. But if it does not work in Raid then that does not matter anyway.

I am not in a big hurry so I will just wait it out and see if they can come up with a solution to get successful SSD trim in a Raid configuration. If not, I may just have to go with some HDD's.

Thanks for the info, I knew I would start learning some new stuff on this site.
 
Aurus_OC said:
Imho I wouldn't even bother to put SSDs in raid at all. Simply, because no Trim and garbage collection is going to get through to the single SSD so performance is going to be amazing for like two days and after it is just going to degrade like crazy. Also the IBIS and especially the Revodrive aren't that good either for the same reasons. They are severall SSDs in a Raid 0 configuration just on one card. You don't want to have to deal with all the problems of those SSDs degrading. However it is kind of cool just to see the amazing speeds that are possible.
Click to expand...

Ok, so After finding that there is Trim that works on newer SSD's if using updated firmware on windows 7.

I now found an article that states that Intel has solved the no Trim in Raid problem?

A Quote.. the new Rapid Storage Technology driver allows users of selected Intel motherboards to enjoy the benefits of RAID without losing the benefits of TRIM support.

There are caveats to the driver, of course: your operating system needs in-built TRIM support, and all drives in the array must be TRIM-compatible. You're also out of luck if you're running RAID 5, for some reason – although the home-use scenarios of RAID 0 or RAID 1 are well covered.

Now the ground has been broken by Intel, we can expect other chipset manufacturers – including rival AMD – to produce RAID-compatible TRIM drivers for their users, too.

That was published 9 Months ago in March of 2010, Thats a

lot of time to work out bugs since then.

You guys are way more sharp on this stuff than I am, But It looks like If I run Windows 7 and get the proper SSD's, Motherboard and Raid Controller, that I can have several smaller SSD's in Raid 0, and have long term consistent Performance? Or am I overlooking something?
 
I was under the understanding that the SSD still couldn't be part of the actual RAID array. It could be attached to the controller and still get the TRIM command, but wouldn't be included in the virtual drive.
 
Yea it has got something to do with the way SSD storage works. I think it's based on NAND flash memory. But we would deffo need an expert in order get that right and in all detail.
unsure.gif
 
OWC sells this SSDs and calls them "Raid-Ready enhanced".

For our main-cluster we had a flash-based storage ( bout 2TB capacity, SAS ports, 1U ).

In this storage are/were 40x24GB flash modules, so they have to be connected with

a RAID-controller, but I can't imagine that this product doesn't support trim and

garbage-collection. Price was near a Ferrari :-P

Maybe there was a special RAID-controller just made for this productfamily built

in the storage, but I do not really think so...

so... I guess there has to be a possibility to run SSDs effective (!) and with

all the trim, GC & co features in a RAID-setup...
 
Xochielt said:
OWC sells this SSDs and calls them "Raid-Ready enhanced".

For our main-cluster we had a flash-based storage ( bout 2TB capacity, SAS ports, 1U ).

In this storage are/were 40x24GB flash modules, so they have to be connected with

a RAID-controller, but I can't imagine that this product doesn't support trim and

garbage-collection. Price was near a Ferrari :-P

Maybe there was a special RAID-controller just made for this productfamily built

in the storage, but I do not really think so...

so... I guess there has to be a possibility to run SSDs effective (!) and with

all the trim, GC & co features in a RAID-setup...
Click to expand...

Impressive. I would imagine you won't be running Windows 7 on them anyways, based on you mentioning a cluster, so Trim won't even be an option. It's all about general garbage collection so if those chips are decent in that aspect (and by the price I assume they are) they shouldn't degrade fast at all.

However, in the consumer end of the market it is important to have the Operating System doing garbage collection for you, because otherwise millions of people will moan because their SSD drives are performing badly after time.

Would be interest to play around with that cluster you mentioned for a while
biggrin.gif
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