[q] Raid-0 2 revodrive x2?

[thejinx0r]

Hi,

First time poster, but I had hard time google had a hard time answering my question.

Is it possible to put 2 revodrive x2 ( which already are in raid 0) in raid 0?
So doubling the throughput yet again to about 4GB/s?

 

[corkyg]

If you already have the 2 drives in RAID 0, why ask the question?

 

[exdeath]

He means that physically a single Revodrive is already implemented with RAID.

As for RAIDing two cards, I doubt it, since they are special PCIe cards and not standard storage devices. Would need proprietary OCZ RAID drivers just for Revodrive.

 

[corkyg]

OK - that makes sense. This OCZ bulletin's footnote caveats against further RAIDing. Better to use them as 2 separate drives.

http://www.ocztechnology.com/ocz-revodrive-x2-pci-express-ssd.html

 

[groberts101]

you could run a software raid in Windows.. but would not be bootable.

 

[corkyg]

you could run a software raid in Windows.. but would not be bootable.

And, you would have no Trim function. Eventually, such array could possibly be slower than the individual drives.

 

[groberts101]

And, you would have no Trim function. Eventually, such array could possibly be slower than the individual drives.

Revo already has no trim pass-through since it runs in raid, Corky.

Also keep in mind that sandforce uses trim much differently than all other controllers. So, even if that drive did pass trim commands down the stack?.. it would mean squat from a speed maintenance standpoint. That's why GC is so powerful on these drives as a maintenance protocol.

 

[exdeath]

Revo already has no trim pass-through since it runs in raid, Corky.

Also keep in mind that sandforce uses trim much differently than all other controllers. So, even if that drive did pass trim commands down the stack?.. it would mean squat from a speed maintenance standpoint. That's why GC is so powerful on these drives as a maintenance protocol.

Not necessarily. It's a proprietary RAID implemented in firmware and I believe one of the advertising points by OCZ is that it has full TRIM support. That and Intel drivers do now finally support passing TRIM to array members (for SATA drives).

However being nonstandard PCIe devices and not SATA drives, RAIDing two cards is likely unsupported.

 

[groberts101]

No they don't have trim support for those drives because it never got implemented on those devices. At least that's what I was last told by OCZ support staff. Plus.. it's a Sandforce controlled drive and they do not recover speed like other controllers do when it comes to TRIM. GC is king on all Sandforce controlled drives since they just set the trim-marked blocks aside for later recovery during low activity GC anyways. Just the way they are designed.

But you are right for sure about no raid support of scsi drivers... which is what those drives use. Newer Intel drivers will do nothing directly in that regard. Although.. it's been said that they will pave the way for cards and PCI-E controlled drives in the future.

 

[greenhawk]

It's a proprietary RAID implemented in firmware and I believe one of the advertising points by OCZ is that it has full TRIM support.

That is for the new RevoDrive 3.

The ealier ones (RevoDrive original and RevoDrive) do not support it.

 

[groberts101]

here's an overview.

"The Revo 3 X2 tilizes OCZ proprietary VCA 2.0 (Virtualized Controller Architecture) which provides features including TRIM and SMART data monitoring. This follow up to VCA presents as a complete storage subsystem, but with an improved and expanded feature-set allowing users unprecedented flexibility and industry-leading performance and reliability.Though the Rev03 card supports TRIM, because the architecture is based on SCSI, the Microsoft Windows StorPort architecture currently does not support either TRIM or SCSI UNMAP. As such, these commands are not generated by the OS, which of course prevents VCA from executing them. OCZ is working with Microsoft to have this functionality enabled as soon as possible"