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No TRIM on Samsung 840 Pro non-raid on X79 RAID

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April 17, 2013 8:28:40 PM

I have assembled new PC (except the case, graphic cards and PSU).

The mobo is GA-X79-UD3. I connected Samsung 840 Pro 128GB SSD to SATA3 port 0 on X79 as a single drive and I have two regular HDDs as RAID1 connected to the X79 SATA2 ports. The X79 storage controller I set to RAID naturally.

The OS is W7 x64

I used shell command to check for TRIM on the Samsung and the OS says it is enabled.

However I ran CrystalDiskInfo and it shows that TRIM is OFF on the disk.

Anyone knows what could be wrong?
a b G Storage
April 17, 2013 9:34:09 PM

If Windows reports TRIM is enabled, then it is.

Points:
1) Make sure you're using Samsung Magician (update firmware, overprovisioning), and

2) How is the SSD controller setup in the BIOS?

If the SSD is on a SATA3 controller, that should be set to AHCI and NOT set to RAID. It makes no sense to have RAID setup if there are no drives on it that are actually setup as RAID drives. Perhaps this is why CrystalDiskInfo isn't reporting TRIM correctly (it ignores RAID setups?).
April 18, 2013 2:29:58 PM

that was the question really.. should it work with RAID.

please read the question carefully - it says - the controller is in RAID mode. and this is because I have RAID1 connected to it. The SSD is single drive not RAID but it connected to the controller which is RAID mode....

should I expect TRIM to work in this configuration or not?

Thanks
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a b Ô Samsung
a c 748 G Storage
April 18, 2013 3:14:58 PM

yes it should but I dont know if Crystal reports it correctly or not.

Best solution

a b G Storage
April 18, 2013 7:17:41 PM
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maxima120 said:
that was the question really.. should it work with RAID.

please read the question carefully - it says - the controller is in RAID mode. and this is because I have RAID1 connected to it. The SSD is single drive not RAID but it connected to the controller which is RAID mode....

should I expect TRIM to work in this configuration or not?

Thanks


I did read the question carefully.
What I was unsure of was whether your SSD and Hard Drives were on SEPARATE controllers. In other words, could the Hard Drives be setup as RAID and your SSD be setup on a separate controller as AHCI?

My Asus Z77 Sabertooth has the main controller setup as RAID because I have a 3xSSD setup (older SSD's). There are SIX SATA connections here. My Samsung 840 PRO also falls under this "RAID" setting for the Intel controller even though the SSD isn't setup as RAID. This design is intentional by INTEL for maximum flexibility.

However, my Samsung Magician software complains that my SSD isn't setup in AHCI mode (I can't do that and have a RAID setup on the same Intel Controller).

Windows does report my Samsung 840 PRO is using TRIM, and my benchmarks are proper so everything's fine, just a little confusion due to the Intel requirement to have the RAID heading.

*My Intel Controller supports AHCI and RAID (probably IDE as well) but I have to choose AHCI or RAID. I have SIX SATA connections under this:
#1 - SSD#1 3xRAID0
#2 - SSD#2 3xRAID0
#3 - SSD#3 3xRAID0
#4 - 2TB HDD
#5 - 3TB HDD
#6 - Samsung 840 PRO SSD

So as per the ABOVE, in the BIOS I have RAID selected for the entire group. The Samsung Magician software then does not see the SSD as AHCI despite everything working properly.

*Again, if Windows reports TRIM then it is.

April 19, 2013 12:16:40 PM

I have to apologize. I was totally stupid. the crystaldiskinfo shows all the disks not just ssd. and the first one was regular hhd which doesn't have trim (obviously).... I assumed that's my ssd and was digging in..... the TRIM is on with RAID mode... yay!
!