Re: RAID5 slowness (how to fix?)

David Stuart wrote:
Hello,

I have recently setup a RAID-5 (software) for some data that my company
frequently uses.

Unfortunately, it is extremely slow! Backups of the data are taking
roughly 11 hours. Is there any way for me to speed this up? What should I
be looking into?

11 hours may be perfectly normal. Describe the RAID array (number of disks, size of each disk, are they IDE/SATA/SCSI). What backup device are you using (e.g., tape, another part of the same array, USB hard disk)?

Have you run any simple benchmarks on the array? Even 'hdparm -tT /dev/md0' (or whatever the RAID device is) would be helpful.
.

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