zfs discuss - Mar 2010 - Fwd: Re: ZFS on a 11TB HW RAID-5 controller

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Forgot to cc the list, well here goes...

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Subject: Re: [zfs-discuss] ZFS on a 11TB HW RAID-5 controller
Date: Wed, 24 Mar 2010 17:10:58 +0100
From: Svein Skogen <svein at stillbilde.net>
To: Dusan Radovanovic <dusan05 at gmail.com>

On 24.03.2010 17:01, Dusan Radovanovic wrote:
> Hello all,
>
> I am a complete newbie to OpenSolaris, and must to setup a ZFS NAS. I do
have linux experience, but have never used ZFS. I have tried to install
OpenSolaris Developer 134 on a 11TB HW RAID-5 virtual disk, but after the
installation I can only use one 2TB disk, and I cannot partition the rest. I
realize that maximum partition size is 2TB, but I guess the rest must be usable.
For hardware I am using HP ProLiant DL180G6, 12 1TB disks connected to P212
controller in RAID-5. Could someone direct me or suggest what I am doing wrong.
Any help is greatly appreciated.
>
> Cheers,
> Dusan
If you have a recent enough raid controller to reliably handle more than
2TB per Logical Disk, it has support for more than one logical disk per
drivegroup/span of drivegroups. Do yourself the favour of setting up a
100GB logical disk 0 for the system, and the rest of the drivegroup/span
for the storage pool. Remember to disable write cache unless you have
battery backup, unless you really want to try out ZFS''s famous
corruption-recovery algorithms by personal experience.

//Svein

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Thank you for your advice. I see your point and will create one virtual disk for
the system and one for the storage pool. My RAID controller is battery backed
up, so I''ll leave write caching on.

Thanks again,
Dusan
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