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Windows 7: Cornfused


07 Nov 2011   #1

win 7 X64 Ultimate SP1
 
 
Cornfused

I used Atto to test a OCZSSD2-2VTXE120G, which is Sata II. I'll post snips of three different test configs and the adverstised specs. When I look at it I am undecided for some reason wheter the disk is preforming up to specs. How about some comment?

Attachment 182667

Attachment 182668

Attachment 182669

Attachment 182670

The disk was in an external Sata dock. (Sata cable)

My System SpecsSystem Spec
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08 Nov 2011   #2

win 7 X64 Ultimate SP1
 
 
Disk

Someone, is this disk any good?
My System SpecsSystem Spec
08 Nov 2011   #3

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate SP1 X64 (Windows 8.1, Linux Mint, Windows XP and others in VM)
 
 

Just off the top of my head, it does not look right. The overlapped I/O pattern looks good although it is far short of the rated speed. But, the other 2 tests do not look right at all to me. have you checked the alignment and are you in AHCI mode?
My System SpecsSystem Spec
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09 Nov 2011   #4

win 7 X64 Ultimate SP1
 
 
Alignment

I'll double check the alignment today. The rig is booting into raid config but I have no raid arrays assigned.
My System SpecsSystem Spec
09 Nov 2011   #5

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

Possible the external SATA "Dock" is a bottle neck.

USB or e-SATA Dock?

Also unless you ran the "SATA" cable inside the case direct it is plugged into an e-Sata port on the case.
The onboard e-Sata has its own controller seperate from the internal SATA ports.
Possibly slower than internal SATA

So please explain what dock you are using and where does the dock cable plug into the motherboard.
This would help greatly.
My System SpecsSystem Spec
09 Nov 2011   #6

win 7 X64 Ultimate SP1
 
 
Dock

It's a Kingwin EZDock ESatat or USB. I am using a external sata cable plugged in to an external sata port on the MoBo.
My System SpecsSystem Spec
09 Nov 2011   #7

win 7 X64 Ultimate SP1
 
 
Alignment

I checked the alignment. It is 1024KB which is div by 4. I changed the rig to AHCI and reran the test they are close enough to be called the same. The only test that shows really good is the one with "Direct I/O" unticked. That means it is using system buffering if I understand it. I am starting to think the disk is allright.
My System SpecsSystem Spec
09 Nov 2011   #8

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

1024 is the right alignment.

I'm not sure but running it through the dock, then cable length, and the e-Sata controller could slow things a little.

Direct I/O unticked is the way I run ATTO. That is default.

I think your good to go.
Mike
My System SpecsSystem Spec
09 Nov 2011   #9

win 7 X64 Ultimate SP1
 
 
Irst

I think it is ok too. When the mfg rates these disks they must do it with system caching.

Side effect of changing to AHCI was the Intel service was using 8 to 6 % of my cpu constantly. I disabled the service and rebooted with no ill effects. Is Intel Rapid Storage Tech needed if I am not managing Raid disks?
My System SpecsSystem Spec
09 Nov 2011   #10

Microsoft Community Contributor Award Recipient

Windows 7 Ultimate SP1 X64 (Windows 8.1, Linux Mint, Windows XP and others in VM)
 
 

If you use the iaStor driver (Intel's AHCI driver), it is needed. IRST is where the iaStor driver comes from. I have it and don't use raid, but have done the same as you, disabled it in services. If you are going to use msahci driver, IRST is not needed. Consesus seems to be that iaStor posts better benchmarks than msahci, but not so that you would really notice.
My System SpecsSystem Spec
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