Date: Thu, 26 Jul 2007 12:42:50 +0100 From: Tom Judge <tom@tomjudge.com> To: =?UTF-8?B?RGFnLUVybGluZyBTbcO4cmdyYXY=?= <des@des.no> Cc: Stephen Hocking <stephen.hocking@gmail.com>, hackers@freebsd.org Subject: Re: FreeBSD & Hot pluggable disks (SATA?) Message-ID: <46A888BA.3010905@tomjudge.com> In-Reply-To: <86abtj34va.fsf@ds4.des.no> References: <6300771b0707252356i3e902d6ch7919ddbb70d411e7@mail.gmail.com> <86abtj34va.fsf@ds4.des.no>
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Dag-Erling Smørgrav wrote: > "Stephen Hocking" <stephen.hocking@gmail.com> writes: >> Have been looking at FreeNAS (http://www.freenas.org/) and thinking >> about the iSCSI portion of it. At the moment the box requires you to >> shutdown when a disk fails in order to replace it. Is this a feature >> of the GEOM RAID stuff? Is it possible (assuming suitable hardware) to >> have hot-pluggable disks under the control of GEOM? > > It is a function of the disk controller and driver. AFAIK, the ata > driver supports hot-plug as long as the SATA controller does. I believe > most Promise and Intel ICH SATA controllers do, not sure about Sil or > nVidia MCP. > > DES If you where using SATA disks on a SAS controller then I think you would also need a back plane with an environmental services controller on it to support hot plug. Tom
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