On Thu, 21 Oct 2010, Fabricio Archanjo wrote: > This box has 24x 1,5T SATA II disks, 3 controllers 3ware > PCI-Express,6G ram memory DDR3 1333Mhz. This disks are distributed for > each controller, 8 disks for each one. I've done at each controller > Raid 10 with 256k stripe size, then I've created one volume group with > all disks and I've created one logical volume with 10G, 3 stripes and > 256k of stripe size. I've gotten a great result with it, but i'd like > to know what all think about it. I didn't know that "raid 10" was shorthand for "raid 1+0". While looking it up on Wikipedia, I learned about some cool features of the linux md driver - it can stripe sequential blocks across drives, while still keeping 2 copies on different drives, even with only 2 drives (what this poor man usually has). There is a "near" configuration, where copies of a block are near each other, and a "far" configuration, where copies of a block are on the second half (or third...) of each leg. http://en.wikipedia.org/wiki/Non-standard_RAID_levels#Linux_MD_RAID_10 This gives many benefits of raid 10 with far fewer drives. -- Stuart D. Gathman <stuart@bmsi.com> Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154 "Confutatis maledictis, flammis acribus addictis" - background song for a Microsoft sponsored "Where do you want to go from here?" commercial. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
