Date: Sun, 20 Jan 2019 20:44:03 +0000 (GMT) From: andy thomas <andy@time-domain.co.uk> To: Ireneusz Pluta <ipluta@wp.pl> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS on Hardware RAID Message-ID: <alpine.BSF.2.21.1901202032470.18901@mail0.time-domain.co.uk> In-Reply-To: <ee6353dc-161f-407e-d976-71ca652970a0@wp.pl> References: <1180280695.63420.1547910313494.JavaMail.zimbra@gausus.net> <92646202.63422.1547910433715.JavaMail.zimbra@gausus.net> <CAOeNLurgn-ep1e=Lq9kgxXK%2By5xqq4ULnudKZAbye59Ys7q96Q@mail.gmail.com> <alpine.BSF.2.21.1901200834470.12592@mail0.time-domain.co.uk> <ee6353dc-161f-407e-d976-71ca652970a0@wp.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, 20 Jan 2019, Ireneusz Pluta wrote: > W dniu 2019-01-20 o?09:45, andy thomas pisze: >> I run a number of very busy webservers (Dell PowerEdge 2950 with LSI >> MegaRAID SAS 1078 controllers) with the first two disks in RAID 1 as the >> FreeBSD system disk and the remaining 4 disks configured as RAID 0 virtual >> disks making up a ZFS RAIDz1 pool with 3 disks plus one hot spare. > In this configuration, have you ever made a test of causing a drive failure, > to see the hot spare activated? No haven't tried this as the clients never gave me the time to try out possible failure secenarios on the 2950 servers. But I now have a spare 2950 with the same RAID controller as the production servers so I could try that asearly as tomorrow & report back. But I do know a Dell T710 server with Perc 6/i controller and all 8 disks configured as RAID 0 with 5 of them in a ZFS RAIDz1 pool plus one spare, a failed disk can be detached and replaced with the spare using zpool command & the pool resilvered manually. (This was on FBSD 9.3 whose ZFS version 28 I don't think supported automatic activation of hot spares). Resilvering took a long time, about 2.5 days, as these were 1 TB Western Digital Caviar Black disks but it was successful. Andy
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?alpine.BSF.2.21.1901202032470.18901>