Separate HD Bench on RAID
- Thread starter THT
- Start date
Windows "recognises" the 2 HDDs in RAID0 as 1 volume, probably the best way to find out if one particular HDD is on the way out, is download the HDD manufacturer's diagnostic utility which will run in DOS, so you can select the individual HDD to test. 
If it's a real hardware RAID, then you'll need a 3rd-party utility to do it.
If it's onboard softraid (intel ICH, nforce, sil, etc... most of them), boot a linux live-cd and type 'hdparm -t /dev/sd{a..z}'
That'll give you the uncached (real) read performance in MB/sec for every recognised SATA/SCSI disk on your system.
Can't fool linux
If it's onboard softraid (intel ICH, nforce, sil, etc... most of them), boot a linux live-cd and type 'hdparm -t /dev/sd{a..z}'
That'll give you the uncached (real) read performance in MB/sec for every recognised SATA/SCSI disk on your system.
Can't fool linux
Last edited:
So says its Western Digital Drive.
I should download their Data Lifeguard Diagnistic Tool from:
http://support.wdc.com/download/index.asp?cxml=n&pid=15&swid=30 ??
I should download their Data Lifeguard Diagnistic Tool from:
http://support.wdc.com/download/index.asp?cxml=n&pid=15&swid=30 ??
NathanE said:
There is one Intel SATA RAID family I'm aware of which they use on some server boards, but the vast majority of desktop 'RAID' chipsets are nothing more than a BIOS which just understands the on-disk configuration metadata, and provides int 13h (legacy BIOS disk) support sufficient for the OS bootloader to load the kernel and drivers. At the hardware level, the disks are presented as raw (AHCI-compliant, in the case of Intel) disks, and the driver does the RAID dirty-work on the main CPU.
You can verify this is the case if you run the drivers through a disassembler - in the case of the RAID5 support on intel ICH8, you can quite clearly identify the xor functions optimised for different classes of CPU instructions