On mer, oct 06, 1999 at 12:06:06 -0500, Kenneth Cornetet wrote:
> Hardware RAID does not necessarily preclude speed. I put a Mylex extremeraid
> 1164 (32MB cache, 2 channels) in a dual 450MHz P3 connected to 4 18GB 10K
> RPM seagate wide low voltage differential SCSI disks in a raid 5 config and
> got about 22 MB/sec reads and writes as reported by bonnie.
Hardware Raid is usually slow for things like initializing an array, or
rebuilding a parity disk. Whatever is on those boards can't compete with
what today's CPUs can do.
raid5: MMX detected, trying high-speed MMX checksum routines
pII_mmx : 1016.127 MB/sec
p5_mmx : 1034.034 MB/sec
8regs : 778.002 MB/sec
32regs : 451.485 MB/sec
using fastest function: p5_mmx (1034.034 MB/sec)
Marc
--
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