> Suffice to say, 2 top-level raidz2 vdevs of similar size with copies=2
> should offer very nearly the same protection as raidz2+1.
> -- richard
This looks like the way to go. Thanks for your input. It's much appreciated!
--
This message posted from opensolaris.org
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On Aug 22, 2009, at 1:02 PM, Kees Nuyt wrote:
On Fri, 21 Aug 2009 18:04:49 -0700, Richard Elling
wrote:
You can get in the same ballpark with at least two top-level
raidz2 devs and copies=2. If you have three or more
top-level raidz2 vdevs, then you can even do better
with copies=3 ;-)
Plea
On Fri, 21 Aug 2009 18:04:49 -0700, Richard Elling
wrote:
> You can get in the same ballpark with at least two top-level
> raidz2 devs and copies=2. If you have three or more
> top-level raidz2 vdevs, then you can even do better
> with copies=3 ;-)
Please note that copies=3 will be obsoleted so
On Fri, 21 Aug 2009, Richard Elling wrote:
magnitude for HDDs). Depending on the repair policy, the probability
of losing a SAS controller is expected to be less than the
probability of losing 3 disks in a raidz2. Since SAS is relatively
easy to make redundant, a really paranoid person would h
On Fri, 21 Aug 2009, Ron Mexico wrote:
Since I can't make a mirrored raidz2, I'd like the next best thing.
If that means doing a zfs send from one raidz2 to the other, that's
fine.
Without using heirarchical servers (e.g. volumes from a zfs pool
exported via iSCSI to be part of another zfs
On Fri, 21 Aug 2009, Tim Cook wrote:
Raid10 won't provide as much protection. Raidz21, you can lose any 4
drives, and up to 14 if it's the right 14. Raid10, if you lose the wrong
two drives, you're done.
On the flip side, the chance of loosing a second drive during the
recovery interval is
comment far below...
On Aug 21, 2009, at 6:17 PM, Tim Cook wrote:
On Fri, Aug 21, 2009 at 8:04 PM, Richard Elling > wrote:
On Aug 21, 2009, at 5:55 PM, Tim Cook wrote:
On Fri, Aug 21, 2009 at 7:41 PM, Richard Elling > wrote:
My vote is with Ross. KISS wins :-)
Disclaimer: I'm also a member of
On Aug 21, 2009, at 6:09 PM, Adam Sherman wrote:
On 21-Aug-09, at 21:04 , Richard Elling wrote:
My point is, RAIDZx+1 SHOULD be simple. I don't entirely
understand why it hasn't been implemented. I can only imagine
like so many other things it's because there hasn't been
significant cus
On Fri, Aug 21, 2009 at 8:04 PM, Richard Elling wrote:
> On Aug 21, 2009, at 5:55 PM, Tim Cook wrote:
>
>> On Fri, Aug 21, 2009 at 7:41 PM, Richard Elling
>> wrote:
>>
>> My vote is with Ross. KISS wins :-)
>> Disclaimer: I'm also a member of BAARF.
>>
>>
>> My point is, RAIDZx+1 SHOULD be simple
On 21-Aug-09, at 21:04 , Richard Elling wrote:
My point is, RAIDZx+1 SHOULD be simple. I don't entirely
understand why it hasn't been implemented. I can only imagine like
so many other things it's because there hasn't been significant
customer demand. Unfortunate if it's as simple as I be
On Aug 21, 2009, at 5:55 PM, Tim Cook wrote:
On Fri, Aug 21, 2009 at 7:41 PM, Richard Elling > wrote:
My vote is with Ross. KISS wins :-)
Disclaimer: I'm also a member of BAARF.
My point is, RAIDZx+1 SHOULD be simple. I don't entirely understand
why it hasn't been implemented. I can only i
On Fri, Aug 21, 2009 at 7:41 PM, Richard Elling wrote:
> On Aug 21, 2009, at 3:34 PM, Tim Cook wrote:
>
> On Fri, Aug 21, 2009 at 5:26 PM, Ross Walker wrote:
>> On Aug 21, 2009, at 5:46 PM, Ron Mexico wrote:
>>
>> I'm in the process of setting up a NAS for my company. It's going to be
>> based
On Aug 21, 2009, at 3:34 PM, Tim Cook wrote:
On Fri, Aug 21, 2009 at 5:26 PM, Ross Walker
wrote:
On Aug 21, 2009, at 5:46 PM, Ron Mexico
wrote:
I'm in the process of setting up a NAS for my company. It's going to
be based on Open Solaris and ZFS, running on a Dell R710 with two
SAS 5/
Ron Mexico wrote:
You'll have to add a bit of meat to "this"!
What are you resiliency, space and performance
requirements?
Resiliency is most important, followed by space and then speed. It's primary
function is to host digital assets for ad agencies and backups of other servers
and wor
> You'll have to add a bit of meat to "this"!
>
> What are you resiliency, space and performance
> requirements?
Resiliency is most important, followed by space and then speed. It's primary
function is to host digital assets for ad agencies and backups of other servers
and workstations in the o
On Fri, Aug 21, 2009 at 5:52 PM, Ross Walker wrote:
> On Aug 21, 2009, at 6:34 PM, Tim Cook wrote:
>
>
>
> On Fri, Aug 21, 2009 at 5:26 PM, Ross Walker <
> rswwal...@gmail.com> wrote:
>
>> On Aug 21, 2009, at 5:46 PM, Ron Mexico <
>> no-re...@opensolaris.org> wrote:
>>
>> I'm in the process o
Ron Mexico wrote:
I'm in the process of setting up a NAS for my company. It's going to be based
on Open Solaris and ZFS, running on a Dell R710 with two SAS 5/E HBAs. Each HBA
will be connected to a 24 bay Supermicro JBOD chassis. Each chassis will have
12 drives to start out with, giving us r
On Aug 21, 2009, at 6:34 PM, Tim Cook wrote:
On Fri, Aug 21, 2009 at 5:26 PM, Ross Walker
wrote:
On Aug 21, 2009, at 5:46 PM, Ron Mexico
wrote:
I'm in the process of setting up a NAS for my company. It's going to
be based on Open Solaris and ZFS, running on a Dell R710 with two
SA
As you can add multiple vdevs to a pool, my suggestion would be to do several
smaller raidz1 or raidz2 vdevs in the pool.
With your setup - assuming 2 HBAs @ 24 drives each your setup would have
yielded 20 drives usable storage (about) (assuming raidz2 with 2 spares on each
HBA) and then mirror
On Fri, Aug 21, 2009 at 5:26 PM, Ross Walker wrote:
> On Aug 21, 2009, at 5:46 PM, Ron Mexico wrote:
>
> I'm in the process of setting up a NAS for my company. It's going to be
>> based on Open Solaris and ZFS, running on a Dell R710 with two SAS 5/E HBAs.
>> Each HBA will be connected to a 24
On Aug 21, 2009, at 5:46 PM, Ron Mexico
wrote:
I'm in the process of setting up a NAS for my company. It's going to
be based on Open Solaris and ZFS, running on a Dell R710 with two
SAS 5/E HBAs. Each HBA will be connected to a 24 bay Supermicro JBOD
chassis. Each chassis will have 12 dr
I'm in the process of setting up a NAS for my company. It's going to be based
on Open Solaris and ZFS, running on a Dell R710 with two SAS 5/E HBAs. Each HBA
will be connected to a 24 bay Supermicro JBOD chassis. Each chassis will have
12 drives to start out with, giving us room for expansion as
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