I know about those SoHo boxes and the whatnot, they keep spinning up and down all the time and the worst thing is that you cannot disable this sleep/powersave feature on most of these devices. I believe I have seen a "sleep mode" support when I skimmed through the feature lists of the LSI controllers but I'm not sure right now. My idea is rather that the "hot spares" (or perhaps we should say "cold spares" then) are off all the time until they are needed or when a user initiated/scheduled system integrity check is being conducted. They could go up for a "test spin" at each occasion a scrub is initiated which is not too frequently.
Perhaps I was a little too conclusive with my assumptions regarding ZFS and OpenSolaris. I figured that real enterprise applications rather use Solaris together with carefully selected hardware whereas OpenSolaris is more aimed at lower-budget/mainstream applications as a way of gaining a wider acceptance for OpenSolaris and ZFS (and of course to help the development of Solaris too, unless there are other plans ...). It has been discussed in many places that file systems do not change as frequently as the operating systems which is considered to be an issue when it comes to the implementation of newer and better technology. I intend to use a raidz2 setup on 8 disks attached to an LSI SAS1068 (LSI SAS3081E-R) based controller and if I decide to use a hot spare I will attach it to the SB750 controller of the system. If the hot spare kicks in I would probably want to swap it with the faulty hard drive on the LSI controller. > ... you should be able to move a disk to another location (channel, slot) > and it would still be a part of the same pool and VDEV. > > This works very well, given your controller properly supports it. ... I hope you are absolutely sure about this. The main reason I asked this question comes from the thread "Intel SASUC8I worth every penny" in this forum section where the thread starter warned that one should use "zpool export" "zpool import" when migrating a tank from one (set of) controller(s) to another. I didn't mean to hurt anyone's feelings here. I'm new to OpenSolaris and ZFS. When I asked these questions I just had finished reading the "OpenSolaris Bible" and the ZFS administration guide (819-5461) together with some of the pages on the opensolaris.com website, so I was merely quoting my sources when I said "newer versions of x supports y". Thank you for your replies they have been insightful. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
