On Jul 14, 2010, at 11:44 PM, David Dyer-Bennet wrote:
> On Wed, July 14, 2010 14:58, Daniel Taylor wrote:
>
>> I'm about the build a opensolaris NAS system, currently we have two drives
>> and are planning on adding two more at a later date (2TB enterprise level
>> HDD are a bit expensive!).
>
>
Cindy,
Thanks for getting back to me so quickly,
I had though about that idea but (forgive me if I'm wrong) won't that
leave me with 4TB of space free from my (eventual) 8TB's worth of
drives?
So 2 of the 2TB drives will be used just for mirroring. Where as with
RaidZ I'd only lose one d
Cindy wrote:
> Mirrored pools are more flexible and generally
> provide good performance.
>
> You can easily create a mirrored pool of two disks
> and then add two
> more disks later. You can also replace each disk with
> larger disks
> if needed. See the example below.
There is no dispute that m
Cindy Swearingen wrote:
Hi Daniel,
No conversion from a mirrored to RAIDZ configuration is available yet.
Well... you can do it, but it's a bit byzantine, and leaves you without
redundancy during the migration.
1) Add your new disks
2) Create a sparse file at least as large as your smallest
Perfect.
Thank you you've been a great help,
I have lots to think about (and test) now!
Thanks again, nice to know this list is so responsive!
- Daniel
On 14 Jul 2010, at 23:34, Cindy Swearingen wrote:
Yes, if you created snapshots of your file systems and stored them
remotely, you could re
Yes, if you created snapshots of your file systems and stored them
remotely, you could receive them into the new pool.
I recommend that you test this process a few times before attempting
the transition.
Thanks,
Cindy
On 07/14/10 16:21, Daniel Taylor wrote:
Sorry I think I used the wrong terms
Sorry I think I used the wrong terms there, still learning, I think
what I meant was send/receive rather than import/export.
Would it be possible to use "zfs send" to backup the data somewhere
(I'll work that bit out later), then "receive" it into the new pool?
And if I did that would I kee
You can't transition a mirrored pool to a RAIDZ pool with an
pool export/import. If you find any info that says you can,
please send a pointer.
You would need to do these important middle steps:
If you transition from a mirrored configuration to a RAIDZ
configuration, you would need to backup th
Cindy,
Hmm, I've using RAIDZ-2 on a nexentastor elsewhere (although that has
15 disks) and having looked quite a bit I agree that mirroring is very
flexible in comparison.
I'll have to think about it and see if I can afford to lose the 2TB's.
The other solution I can think off is to export
On Wed, July 14, 2010 14:58, Daniel Taylor wrote:
> I'm about the build a opensolaris NAS system, currently we have two drives
> and are planning on adding two more at a later date (2TB enterprise level
> HDD are a bit expensive!).
Do you really need them? Now? Maybe 1TB drives are good now, a
Yes, that is true. If you have 4 2 TB drives, you would only get 4 TBs
of usable disk space in a mirrored config.
The problem I see with your potential RAIDZ config, if I understand
it correctly, is that you can't add more disks to an existing RAIDZ
config. You would need to create a 3 disk RAID
Hi Daniel,
No conversion from a mirrored to RAIDZ configuration is available yet.
Mirrored pools are more flexible and generally provide good performance.
You can easily create a mirrored pool of two disks and then add two
more disks later. You can also replace each disk with larger disks
if ne
On 7/14/10 Jul 14, 2:58 PM, "Daniel Taylor" wrote:
> I was thinking of mirroring the drives and then converting to raidz some how?
Not possible. You can start with a mirror and then add another mirror; the
filesystem will spread data across both drives in a way analogous* to RAID
10.
*You can't
Hello,
I'm about the build a opensolaris NAS system, currently we have two drives and
are planning on adding two more at a later date (2TB enterprise level HDD are a
bit expensive!).
Whats the best configuration for setting up these drives bearing in mind I want
to expand in the future?
I was
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