So what HP calls RAID 0+1 is RAID 10 (STRIPED MIRRORS) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of K.S. Bhaskar Sent: Monday, December 13, 2004 11:50 AM To: [EMAIL PROTECTED] Subject: RE: [Hardhats-members] Linux question: Redhat 9 vs. Fedora 3?
Yes, you can use RAID 01 (0+1 - mirrored stripes) or RAID 10 (1+0 - striped mirrors). See http://www.pcguide.com/ref/hdd/perf/raid/levels/multLevel01-c.html RAID 5 protects against the loss of a disk, but has a performance penalty, so if disks are cheap and performance matters, RAID 01 or RAID 10 are better. But if performance is not important, as in a training system, then RAID 5 gives the most efficient use of disk space while protecting against the loss of any single disk. -- Bhaskar On Mon, 2004-12-13 at 14:13, Beza, Fil wrote: > FWIW, on our VMS and NT systems, all our VistA production storage uses > what HP calls RAID 0+1 Each disk is mirrored and mirrors (usually > either 3 or 6) are used to form a STRIPESET. > > For example, my system has 18.2 Gb disk drives. 2 drives are used to > form the mirror. Then I have six mirrors (12 disks) that form the > stripeset for a total of 109 Gb per container. The mirroring guard > against disk failure and striping for access speed. > > We use RAID 5 for non-production use like a test/training system, > backup. ************************************************************************ *** This electronic mail transmission contains confidential and/or privileged information intended only for the person(s) named. Any use, distribution, copying or disclosure by another person is strictly prohibited. ************************************************************************ *** NOTE: Ce courriel est destine exclusivement au(x) destinataire(s) mentionne(s) ci-dessus et peut contenir de l'information privilegiee, confidentielle et/ou dispensee de divulgation aux termes des lois applicables. Si vous avez recu ce message par erreur, ou s'il ne vous est pas destine, veuillez le mentionner immediatement a l'expediteur et effacer ce courriel. ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ Hardhats-members mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hardhats-members ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/ _______________________________________________ Hardhats-members mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/hardhats-members
