setting up a mirror (via software?): easier on 10, 11? (I have9)
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From: Ian Collins on 3 Apr 2008 21:44 David Combs wrote: > Getting jittery about my old disks. > > 1: must I mirror on exactly identical disks? > No, but the slices you mirror should be the same size. > 2: software-mirroring: blade100 fast enough? or **MUCH** better > with ultra 25? > Root mirror on a Blade 100 will be OK, anything is better with a U25! > 3: Is there anything in 10 or 11, over 9, that makes > it easier (or anything)? > ZFS for anything other than root (in current builds, ZFS on the way). > 4: Stepson has mirroring on his pc -- apparantely took > months to acquire needed hardware, and in all > spent something like $5K. > > I assume there's no such problem on solaris sparc? > None, -- Ian Collins.
From: Richard B. Gilbert on 3 Apr 2008 21:59
David Combs wrote: > Getting jittery about my old disks. > > 1: must I mirror on exactly identical disks? I don't know that it's REQUIRED. It is, however an excellent idea and pretty much guarantees success on the first try. > > 2: software-mirroring: blade100 fast enough? or **MUCH** better > with ultra 25? The software part of mirroring is just issuing two writes instead of one. Remember that everything must be written to BOTH disks. > > 3: Is there anything in 10 or 11, over 9, that makes > it easier (or anything)? > > 4: Stepson has mirroring on his pc -- apparantely took > months to acquire needed hardware, and in all > spent something like $5K. > I could do it for less! Adaptec has, or had, an EIDE RAID controller that does RAID 1 (mirror) or RAID 5. Today would cost $300-$500 depending on the size of disks employed. Probably a lot closer to $300. That figure does not include the cost of the PC itself; just the disks and controller. Doing it with SCSI could get REALLY expensive. The disks themselves are expensive and the controllers aren't cheap either! > I assume there's no such problem on solaris sparc? > > > Thanks! > > David > > |