In the ESS F20 and 800, you select Raid 5. If your hardware installer hooks them up in the specified order, The First 16 8-packs of a particular disk size uses 6+P+S and the Next 32 8-packs use 7+P.
If you ask for a Custom Install Order, You could have the first 12 8 packs hooked up to the first card. This would have the first 4 8-packs be 6+P+S and the next 8 be 7+S. Then repeat for the next 3 cards. On Fri, Feb 15, 2013 at 6:11 AM, Raju Reddy <[email protected]> wrote: > Hi All, > > We are under the process of migrating to DS8870 from DS8100. > From DS8870 box, while I create new Arrays with Arraysite capacity of > 2400GB(8*300GB), I get around 1652GB of usable storage while rest will go > for Parity and Spare. > > We use SSD disks and when I create Arrays is picks RAID5 which > automatically picked RAID 5 (6+P+S) and thus causing loss of 750 GB of > storage. > > We need RAID 5 (7+P) for 'Development' LPAR's to increase the usable > storage but DS8000 GUI is not allowing me chose RAID 5 (7+P) combination. > > Can you please advice how to make Arrays pick RAID 5 (7+P) combination.? > > Regards -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
