SSD raid packs from OC

You don't need trim in raid if the ssd's use sandforce controllers, as those controllers have garbage collection, which works like trim when the drive is idle, and garbage collection works with raid, where as trim doesn't.
 
bifday2k said:
You don't need trim in raid if the ssd's use sandforce controllers, as those controllers have garbage collection, which works like trim when the drive is idle, and garbage collection works with raid, where as trim doesn't.
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Many many thanks for clearing that up! Much appreciated :)
 
roachyuk said:
so why exactly cant trim be used in raid any one know thanks
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Because TRIM is an ATA command and when disk are in RAID they are connected via the RAID controller, not a disk controller.

The RAID controller would need to support ATA command pass-though for it to pass the commands from the OS to the disks, but most RAID controllers don't support it so the commands could not get to the disks so they are dropped as the RAID controller doesn't understand it.

I don't know why ATA pass-through is so difficult to implement, but there must be pretty good reasons otherwise it'd be available now.
 
What is the situation when M4's are in Windows 7 (software) striped raid?

Does Trim still function, or picking up on bifday2k post about Sandforce implementing it's own garbage collection, would Trim still matter anyway?
 
Guys, this has been said many times. No combination of SSD, firmware, SATA controller and SATA driver allows TRIM to work with RAIDed SSDs! Intel's drivers allow TRIM to pass through to SSDs if your SATA controller is in RAID mode but NOT if the SSDs themselves are in a RAID array.
 
DragonQ said:
Guys, this has been said many times. No combination of SSD, firmware, SATA controller and SATA driver allows TRIM to work with RAIDed SSDs! Intel's drivers allow TRIM to pass through to SSDs if your SATA controller is in RAID mode but NOT if the SSDs themselves are in a RAID array.
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Ahh that makes sense. So M4s in RAID is not a great idea then?
 
After reading the thread I posted above. From what I understand without Trim, then the SSD will garbage collect files marked for deletion (so moving files marked for deletion that's pointless). With Trim garbage collection will only move files in use (not marked for deletion) so less abusive on the drive. Again only from what I understand I could be wrong.
 
so buy buying the ssd on the sanforce controller and using them on the intel 6gb they will work fine and have no problems reguarding garbage collection even if trim is not supported?
 
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