md2 = RAID0 ext2
hda = hdb = IBM DTTA-351010 (10GB, 5400RPM, UDMA33)
# hdparm -tT /dev/hda /dev/md2
/dev/hda:
Timing buffered disk reads: 64 MB in 5.27 seconds = 12.14 MB/sec
Timing buffer-cache reads: 128 MB in 0.82 seconds =156.10 MB/sec
/dev/md2:
Timing buffered disk reads: 64 MB in 3.34 seconds = 19.16 MB/sec
Timing buffer-cache reads: 128 MB in 0.80 seconds =160.00 MB/sec
On AMD K7 w/ 7409 (Viper) chipset, DMA66 mode w/ 80-pin cable.
kernel = 2.4.1-ac8, no errors in kernel log.
So I get a 58% increase. You should almost max out the bus.
You probably have a bad cable. Try hdparam on each disk and see if
any of them have errors/ cause the lockup.
-Thomas
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