On 11/11/2011 01:02 AM, darkblue wrote:
2011/11/11 Jeff Savit <jeff.sa...@oracle.com
<mailto:jeff.sa...@oracle.com>>
On 11/10/2011 06:38 AM, Edward Ned Harvey wrote:
From:zfs-discuss-boun...@opensolaris.org
<mailto:zfs-discuss-boun...@opensolaris.org> [mailto:zfs-discuss-
boun...@opensolaris.org <mailto:boun...@opensolaris.org>] On Behalf Of
Jeff Savit
Also, not a good idea for
performance to partition the disks as you suggest.
Not totally true. By default, if you partition the disks, then the disk
write cache gets disabled. But it's trivial to simply force enable it thus
solving the problem.
Granted - I just didn't want to get into a long story. With a
self-described 'newbie' building a storage server I felt the best
advice is to keep as simple as possible without adding steps (and
without adding exposition about cache on partitioned disks - but
now that you brought it up, yes, he can certainly do that).
Besides, there's always a way to fill up the 1TB disks :-) Besides
the OS image, it could also store gold images for the guest
virtual machines, maintained separately from the operational images.
how big of the solaris os'partition do you suggest?
That's one of the best things about ZFS and *not* putting separate pools
on the same disk - you don't have to worry about sizing partitions. Use
two of the rotating disks to install Solaris on a mirrored root pool
(rpool). The OS build will take up a small portion of the 1TB usable
data (and you don't want to go above 80% full so it's really 800GB
effectively). You can use the remaining space in that pool for
additional ZFS datasets to hold golden OS images, iTunes, backups,
whatever. Or simply not worry about it and let there be unused space.
Disk space is relatively cheap - complexity and effort are not. For all
we know, the disk space you're buying is more than ample for the
application and it might not even be worth devising the most
space-efficient layout. If that's not the case, then the next topic
would be how to stretch capacity via clones, compression, and RAIDZn.
Along with several others posting here, I recommend you use Solaris 11
rather than Solaris 10. A lot of things are much easier, such as
managing boot environments and sharing file systems via NFS, CIFS,
iSCSI, and there's a lot of added functionality. I further (and
strongly) endorse the suggestion of using a system from Oracle with
supported OS and hardware, but I don't want to get into any arguments
about hardware or licensing please.
regards, Jeff
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