03-09-2010 06:21 AM
I've got three 80 GB X25-M SSDs in RAID 0 using the SATA RAID option on my motherboard (Intel ICH10R.) I flashed the drives to the latest firmware on 3-4-10. I am using Vista64 on an i7-920 system.
READ speed is fantastic; 4k WRITE speed is DISMAL - like 4 mb/sec - OR LESS- no matter what benchmark I use. Using AS SSD benchmark I get the following results- What am I doing wrong? Is there some setting I goofed up somehow? I spent $650 on these drives and my system is WAY SLOWER now than it was with a WD Raptor!
Solved! Go to Solution.
03-09-2010 05:48 PM
I suspect your partitions are not properly aligned to erase boundaries based on the screenshot of AS SSD (31k - BAD).
Use this calculator to figure out proper alignment for your disks and then repartition:
03-10-2010 09:08 PM
I'm not familiar with the capabilities of various tools out there, but just make sure that if you're not going to re-install the OS from scratch, that you're using a tool that puts the system image in the right place. A tool that is not alignment aware will overwrite any fancy partition manipulation you do.
03-10-2010 09:11 PM
Here, this util looks like it can do it:
03-10-2010 11:34 PM
03-10-2010 11:50 PM
ok, now the benches look more in line, but still not stunning on the write side fro RAID. Are you using software RAID? I would also play around with the various intel drivers to see if you can eke out any more performance gains. Are these G1 or G2 drives? That could make a difference in the write speeds too.
03-11-2010 11:08 AM
You could also try to run SSD optimizer on each drive seprately before RAIDing them to get a write boost. unfortunately, I don't beleive SSD toolbox supports trimming RAIDed drives yet.