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From: "Nigel Roles" <nigel@9fs.org>
To: <9fans@cse.psu.edu>
Subject: RE: [9fans] scsi raid controller
Date: Mon, 14 Apr 2003 14:24:10 +0100	[thread overview]
Message-ID: <HOEHIDJJJINMLFPOLFJCMEBACOAA.nigel@9fs.org> (raw)
In-Reply-To: <d8af2e1b2d2c39617cc9f5e73767cf5c@plan9.bell-labs.com>

At a guess it's an external box which
emulates a SCSI hard disk, but consists
of a RAID processor and a bank of drives.
Any configuration/rebuild is controlled
by a front panel.

There are also 2 or 3 drive + CPU combos
you can get for PCs which again emulate
a single IDE/SCSI drive. These typically
have hot swap trays and a small LCD to
control them, so that the host PC needs
no extra hardware or software. Quite a nice
way to do it, but not very cheap.

-----Original Message-----
From: 9fans-admin@cse.psu.edu [mailto:9fans-admin@cse.psu.edu]On Behalf
Of Russ Cox
Sent: 14 April 2003 13:56
To: 9fans@cse.psu.edu
Subject: Re: [9fans] scsi raid controller


> There's no support for SCSI RAID devices.  If you can get them to imitate
> a standard controller, it might work.

Our main Venti server runs on a big RAID.
I don't know details of how it works, but
it does work.  Presumably it does imitate
a really big disk.

There's definitely no support for software
RAID, though if you want mirroring there's fs(3).



  reply	other threads:[~2003-04-14 13:24 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-14  3:56 Andrew
2003-04-14  4:10 ` Dan Cross
2003-04-14 12:55   ` Russ Cox
2003-04-14 13:24     ` Nigel Roles [this message]
2003-04-14  6:11 ` Nigel Roles
2003-04-15  5:23   ` Andrew

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