zfs discuss - Nov 2010 - New system, Help needed!

I am a newbie on Solaris. 
We recently purchased a Sun Sparc M3000 server. It comes with 2 identical hard
drives. I want to setup a raid 1. After searching on google, I found that the
hardware raid was not working with M3000. So I am here to look for help on how
to setup ZFS to use raid 1. Currently one hard drive is installed with Solaris
10 10/09, I want to setup ZFS raid 1 without reinstalling Solaris, it that
possible, and how can I do that.

Thank you for any help!
-- 
This message posted from opensolaris.org

+------------------------------------------------------------------------------
| On 2010-11-15 08:48:55, Frank wrote:
| 
| I am a newbie on Solaris. 
| We recently purchased a Sun Sparc M3000 server. It comes with 2 identical hard
drives. I want to setup a raid 1. After searching on google, I found that the
hardware raid was not working with M3000. So I am here to look for help on how
to setup ZFS to use raid 1. Currently one hard drive is installed with Solaris
10 10/09, I want to setup ZFS raid 1 without reinstalling Solaris, it that
possible, and how can I do that.

If you have a zfsroot (rpool) you can just google for "zfs rpool mirror
attach". It is trivial. Amounts to prvtoc disk1 | disk2 ; zpool attach
disk2
disk1 ; installgrub disk2.

If you have a UFS root you''ll need to migrate. See the Solaris 10
sysadmin docs
for that process. Alternatively you can use SVM to set up a mirror, but SVM is
dead weight going forward.
-- 
bdha
cyberpunk is dead. long live cyberpunk.

> From: zfs-discuss-bounces at opensolaris.org [mailto:zfs-discuss-
> bounces at opensolaris.org] On Behalf Of Bryan Horstmann-Allen
> |
> | I am a newbie on Solaris.
> | We recently purchased a Sun Sparc M3000 server. It comes with 2
identical
> hard drives. I want to setup a raid 1. After searching on google, I found
that
> the hardware raid was not working with M3000. So I am here to look for
help
> on how to setup ZFS to use raid 1. Currently one hard drive is installed
with
> Solaris 10 10/09, I want to setup ZFS raid 1 without reinstalling Solaris,
it that
> possible, and how can I do that.
> 
> If you have a zfsroot (rpool) you can just google for "zfs rpool
mirror
attach".
> It is trivial. Amounts to prvtoc disk1 | disk2 ; zpool attach disk2
> disk1 ; installgrub disk2.
There is no installgrub for sparc systems.  There''s some other
bootloader
process instead...  See the ZFS Best Practices Guide, and the ZFS
Troubleshooting Guide.  I don''t know what prvtoc is.

Also, you should be glad you didn''t have the hardware raid anyway. 
Because
now you have to learn about ZFS software raid.  The preferred and
recommended thing to do is ZFS raid instead.  There are many threads on
this...  Basically ZFS is able to do things that hardware can''t do,
because
ZFS has knowledge of the disk blocks and filesystem, while hardware only has
knowledge of the disk blocks.  End result is:  ZFS raid is both faster and
more reliable than hardware raid.

On Nov 15, 2010, at 8:48 AM, Frank wrote:
> I am a newbie on Solaris. 
> We recently purchased a Sun Sparc M3000 server. It comes with 2 identical
hard drives. I want to setup a raid 1. After searching on google, I found that
the hardware raid was not working with M3000. So I am here to look for help on
how to setup ZFS to use raid 1. Currently one hard drive is installed with
Solaris 10 10/09, I want to setup ZFS raid 1 without reinstalling Solaris, it
that possible, and how can I do that.
The process is documented in the ZFS Administration Guide.
http://hub.opensolaris.org/bin/download/Community+Group+zfs/docs/zfsadmin.pdf
 -- richard

Thank you all for your help.

Have a nice day!
-- 
This message posted from opensolaris.org