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Daniel Robinson wrote: > > To increase OS R/W performance, I think i would need to install parts of the > OS accross the arrays, Depends what sort of IO mix you have, but apart from the log files, and email/database stuff in /var, the file systems for GNU/Linux itself aren't I/O intensive. > With Microsoft i used EIDE disks as virtual/scratch/adobe memory as this > increaced performance when moving big files about. Odd, big file I/O performance is usually limited to the disk transfer speeds, assuming "big" means many times large than RAM. If you create a swap partition on each of the disks (with the same priority - don't fiddle and they'll get the same priority), then any paging will be done in a round robin fashion, which achieves the same effect. > I would like to know if anybody has any suggestions as to how i could arrange > a good performance setup across multipul disks. You could put data in a striped disk array, but given your disks have different interfaces, they probably have very different capabilities, and probably best performance will be achieved by putting the stuff you use most on the fastest disk(s). -- The Mailing List for the Devon & Cornwall LUG Mail majordomo@xxxxxxxxxxxxx with "unsubscribe list" in the message body to unsubscribe. FAQ: www.dcglug.org.uk/linux_adm/list-faq.html