Utilizing TRIM on RAID arrays running Windows 7?
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Monday, May 21, 2012 6:40 PMWill Windows 7 ever allow for TRIM on RAID?
All Replies
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Monday, May 21, 2012 7:08 PM
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Monday, May 21, 2012 10:12 PM
No RAID card, I am using the on-board SATA ports (4x SSD in RAID0) with Intel RST 11.5.0.1149 and RAID OROM 11.5.0.1111.
I have read, and please tell if this not true, that Windows 8 will pass the TRIM command to the drives, but Windows 7 will not. It was postulated that it is because the RST driver makes Windows see the array as a SCSI device, and that the Windows 7 driver disallows TRIM on SCSI.
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Tuesday, May 22, 2012 2:29 AMModerator
Hi,
Based on my understanding, this is need the driver to support this kind of function, currently, you could refer to the following article:
Can TRIM command work on Solid State Drives with RAID Configuration?
http://www.intel.com/support/ssdc/hpssd/sb/CS-031242.htm?wapkw=trim+ssd
Alex Zhao
If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.
Alex Zhao
TechNet Community Support
- Edited by Alex ZhaozxMicrosoft Contingent Staff, Moderator Tuesday, May 22, 2012 2:30 AM typo
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Tuesday, May 22, 2012 2:42 AM
Alex,
I saw that in my search for answer, but then I also found this in the RST 11.5.0.1149 Help:
• TRIM
This feature provides support for all pass-through solid-state drives (SSDs) in your storage system that meets the ATA-8 protocol requirements. Also, support is provided for SSDs that are part of a RAID 0 array. This feature optimizes write operations, helps reduce device wear, and maintains unused storage area on devices as large as possible. -
Tuesday, May 22, 2012 6:21 AMModerator
Hi,
As I said, this need the driver support. Given this is released by driver manufacturer , to make it clear, please contact the driver supplier to eliminate confusion
Alex Zhao
If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.
Alex Zhao
TechNet Community Support
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Tuesday, May 22, 2012 1:11 PM
Alex,
Could you please clarify that Widows 7 does not pass the TRIM command to SCSI devices?
Could you verify that Windows 8 will pass the TRIM command to SCSI devices?
Do you know, or could you point me in the direction of someone who does, if Windows 7 will get an update that will allow the TRIM command to be passed to SCSI devices?
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Wednesday, May 23, 2012 2:57 AMModerator
Hi,
What we said above is to indicate this is not the operating system issue, it is supported by the driver, an older driver may not support this function, but a new version maybe work, all of this depend on the driver manufacturer.
Alex Zhao
If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.
Alex Zhao
TechNet Community Support
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Wednesday, May 23, 2012 11:51 AM
Please confirm that Windows 7 will pass the TRIM command to a SCSI device, yes or no?Hi,
What we said above is to indicate this is not the operating system issue, it is supported by the driver, an older driver may not support this function, but a new version maybe work, all of this depend on the driver manufacturer.
Alex Zhao
If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.
Alex Zhao
TechNet Community Support
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Thursday, May 24, 2012 6:27 AMModerator
Hi,
Sorry for my late reply.
As my understanding, Windows 7 supports TRIM command but ONLY for ATA drives. For SCSI drives, there is another similar command named UnMap command for SCSI devices, Windows 7 also cannot support this command, too.
Alex Zhao
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Alex Zhao
TechNet Community Support
- Marked As Answer by Alex ZhaozxMicrosoft Contingent Staff, Moderator Wednesday, May 30, 2012 5:17 AM
- Unmarked As Answer by NickL_123 Saturday, June 23, 2012 6:15 PM
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Thursday, May 24, 2012 12:36 PM
Alex,
Thank you for the answer.
Will Windows 7 provide support when Service Pack 2 is released?
Also, I have read that Windows 8 does support RAID TRIM. Could you please confirm or deny that rumor?
Regards
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Friday, May 25, 2012 3:45 AMModerator
Hi,
There is new API allow Apps to send “TRIM and Unmap” hints to storage media in Windows 8, you may look this article:
http://msdn.microsoft.com/en-us/library/hh848053(v=vs.85).aspx
Alex Zhao
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Alex Zhao
TechNet Community Support
- Marked As Answer by Alex ZhaozxMicrosoft Contingent Staff, Moderator Wednesday, May 30, 2012 5:17 AM
- Unmarked As Answer by NickL_123 Thursday, May 31, 2012 10:20 PM
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Monday, May 28, 2012 7:05 AMModerator
Hi,
I am just writing to check the status of this thread. Was the information provided in previous reply helpful to you? Do you have any further questions or concerns? Please feel free to let us know.
Alex Zhao
If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.
Alex Zhao
TechNet Community Support
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Wednesday, May 30, 2012 5:17 AMModerator
Hi,
As this thread has been quiet for a while, we assume that the issue has been resolved. At this time, we will mark it as ‘Answered’ as the previous steps should be helpful for many similar scenarios. If the issue still persists, please feel free to reply this post directly so we will be notified to follow it up. You can also choose to unmark the answer as you wish.
BTW, we’d love to hear your feedback about the solution. By sharing your experience you can help other community members facing similar problems. Thanks for your understanding and efforts.
Regards,
Alex Zhao
If you are TechNet Subscription user and have any feedback on our support quality, please send your feedback here.
Alex Zhao
TechNet Community Support
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Thursday, May 31, 2012 10:22 PM
I unmarked it due to only receiving a partial answer.
If you would be so kind as to reply to the other question, I would appreciate it.
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Thursday, June 14, 2012 9:03 PMWill Windows 7 ever support Unmap for SSD's like the OCZ RevoDrive 3? You must understand that finding a straight answer for this is difficult because OCZ is pointing the finger at you and you are pointing the finger at them.
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Friday, June 15, 2012 2:49 AM
TRIM and UnMap are late to the storage solutions sector
If you have an older RAID card it may or not work depending on the server package you are using
new high end raid cards are supporting SSD better than before. I have seen lots of PCIe x8 RAID cards that have excellent performance with 16 ports for << $1000
Windows MVP 2011-12, XP, Vista, 7 and 8.
Hardcore Games, Legendary is the only Way to Play
Developer | Windows IT | Chess | Economics | Vegan Advocate | PC Reviews
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Saturday, June 23, 2012 6:22 PM
Apparently there is no concise answer to all my questions forthcoming.
@Moderator,
You may close this thread if you wish, but please refrain from marking it as 'Answered', because it has not been answered.
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Saturday, June 23, 2012 6:42 PM
Yesterday an Intel SSD came into the shop to be installed in a portable.
I checked it for a firmware update with Intels's tool, no problem.
TRIM is an older solution to deal with removing unused blocks etc.
More recent SSDs will often contain internal idle/background garbage collection mechanisms that work independently of TRIM; although this successfully maintains their performance even under operating systems that do not (yet) support TRIM.
Windows only supports on directly attached SSDs. The RAID card will have to support it as its middleware to the OS. Most RAID cards still do not support it.
Windows MVP 2011-12, XP, Vista, 7 and 8.
Hardcore Games, Legendary is the only Way to Play
Developer | Windows IT | Chess | Economics | Vegan Advocate | PC Reviews
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