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Date:      Tue, 30 Jul 2002 16:40:35 -0500
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Oliver Humpage <bittern@blueyonder.co.uk>
Cc:        freebsd-questions@FreeBSD.ORG, oliver@watershed.co.uk
Subject:   Re: Odd vinum config
Message-ID:  <20020730214035.GF95493@dan.emsphone.com>
In-Reply-To: <58E35A6A-A404-11D6-8DE2-000A2795CB26@blueyonder.co.uk>
References:  <58E35A6A-A404-11D6-8DE2-000A2795CB26@blueyonder.co.uk>

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In the last episode (Jul 30), Oliver Humpage said:
> Is it possible to set up a mirrored volume in vinum, but only set *one* 
> of the plexes to be used for reading?
> 
> The reason I'm asking is that I'm making a Network Attached Storage box, 
> which I think should have SCSI disks and RAID 1. Unfortunately, our 
> budget doesn't stretch to 8 73GB SCSI drives :-)  So I wondered about 
> having 4 73GB SCSI drives concatenated for the main storage space, and 2 
> 160GB IDE drives (also concatenated) as a RAID 1 mirror. However, I 
> don't want to put too much load on the IDE drives, so I thought perhaps 
> vinum could be set *not* to read from them, merely to write (although, 
> if a SCSI drive failed, of course it would have to read from them!).

man vinum, search for readpol

-- 
	Dan Nelson
	dnelson@allantgroup.com

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