Reviews > Storage > OCZ Revo Drive X2 480 GByte

OCZ Revo Drive X2 480 GByte

Published by rewarder on 11.01.11 (33335 reads)
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If you take a look at the SSD market, searching for a really powerful product, then you'll definitely take the OCZ Revo Drive X2 into account. With a throughput of 740 MB/s read and 720 MB/s write this drive shows serious throughput rates and also the claimed 120'000 IOPS are massive.





Specifications


Model OCZ Revo Drive X2 480 GBypte
Capacity 480 GByte
Technology PCI-Express x4, 4 x SandForce 1222 Controller, Internal RAID 0
Throughput up to 740 MB/s reading, up to 720 MB/s writing
Accesstime (read) < 0.1 ms
Life expectance 2'000'000 hours (MTBF)
Acoustics no noise
Warranty 3 Years


Technical details

Reading the specs of the Revo Drive X2 makes the heartbeat of any poweruser go faster. Totally OCZ combined four SandForce 1222 controller on one PCB in a RAID0 configuration. Using a PCI-Express x4 interface and therefore a Pericom PCI-X bridge chip enables OCZ to deliver serious datarates. On the card itself you also find a Silicon Image Sil3124 RAID controller which combines the four single SSDs to one big and fast drive. Furthermore also the installation process becomes quite easy. This is because the RAID controller got it's own BIOS which can be configured however you like it most. If you would wish that you can even alter the RAID0 configuration. What can also be adjusted is the junk size which is an important feature. This let's you optimize the drives performance for more IOPS or higher throughput rates. We decided to use a 128K junk size because of the simple reason that this is the most widely spread configuration in desktop computers. Therefore we expect to not reach the claimed 120'000 IOPS during 4K random reads or random writes.

Probably you noticed that in the specifications you can't find anything about TRIM support. Therefore the four SandForce 1222 controllers have to do garbage collection themselves. Fortunately these controllers are suitable for long term use without supporting the TRIM command. It takes quite a long time until a slight performance degradation takes place.



Page 1 - Introduction Page 7 - Random read KByte/s
Page 2 - Impressions Page 8 - Sequential write ops
Page 3 - How do we test? Page 9 - Sequential read ops
Page 4 - Sequential write KByte/s Page 10 - Random write ops
Page 5 - Sequential read KByte/s Page 11 - Random read ops
Page 6 - Random write KByte/s Page 12 - Conclusion



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Rating: 2.0/5 (2 votes)
 
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Author Thread
rewarder
Published: 2011/1/12 21:42  Updated: 2011/1/12 21:42
Webmaster
Joined: 2004/7/5
From: Zürich CH
Comments: 1189
 Awesomness
This drive is absolutely staggering!
Reply
Anonymous
Published: 2011/1/19 18:36  Updated: 2011/1/19 18:36
 Awesome but unstable !
I'm using since december a Revodrive x2 with an Asus Sabertooth (known as COMPATIBLT with revodrive), let me share with you that at first the card worked well and quite fast.
A week later without any warning or change to the computer, it started to provoked the Kernel-Power EventID 41 once every four or five cold boot.
Several days later, my c:\ drive started to lose data and Ms Office has to be reinstalled.
The next day I decided to restore the whole partition with Windows restore tool.
Yesterday, I applied the latest Bios 0802 hoping the problem would go away.
Nothing changes, I now have a chkdsk once for every two cold boots.
I got the impression of time travelling back in the 93-94 when using a 8000 $ Compaq 386/20e with Windows NT4 on !
Reply
rewarder
Published: 2011/1/19 22:52  Updated: 2011/1/19 22:52
Webmaster
Joined: 2004/7/5
From: Zürich CH
Comments: 1189
 Re: Awesome but unstable !
You can try to deactivate one of your onboard RAID controllers. According to Cryo this should help. The problem is that you get a BIOS overflow because too much is being loaded. Cryo also has an ASUS motherboard and he had the same issues. Deactivating one RAID controller helped him.
Reply
Anonymous
Published: 2011/1/19 23:39  Updated: 2011/1/19 23:39
 Re: Awesome but unstable !
On the Sabertooth X58 motherboard, there is no RAID controller.
If you meant the Marvel Sata 3 controller, it was disabled as suggested by the OCZ forum thread on EventID 41.
Thanks.
Reply
rewarder
Published: 2011/1/21 9:26  Updated: 2011/1/21 13:45
Webmaster
Joined: 2004/7/5
From: Zürich CH
Comments: 1189
 Re: Awesome but unstable! --> Did it work?
And it didn't help to disable the Marvell controller?
Reply
Anonymous
Published: 2011/2/3 0:30  Updated: 2011/2/3 0:30
 You need to test with uncompressible data
The RevoDrive X2 with SandForce controllers relies heavily on data compression in order to achieve high benchmark results. If you test with uncompressible data (which is what most user data is -- applications, games, media files) you will find that your IOPS plummet to around 30K (at 4K blocks) and your bandwidth is limited to around 400-500 MB/s.
Reply
rewarder
Published: 2011/2/3 7:41  Updated: 2011/2/3 7:41
Webmaster
Joined: 2004/7/5
From: Zürich CH
Comments: 1189
 Re: You need to test with uncompressible data
In this review the 4k random write IOPS are at 39k. The random read 4k randoms down at 11k.
Further testing show that when the number of threads that are writing/reading simultaneously are between 12 and 32 (quite a wide range actually) then the drive shows much higher IOPS values. This, I'm quite sure, has to do with the internal architecture of the controller. For this review we did the test using two threads.

I'm not completely sure about the following but I do think that regarding the IOPS/random tests I do not use compressible data. I will investigate what iozone is actually doing behind the scenes.
Reply
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