Stephen Harris wrote:
> "Almost always" is very dependent on the disks and size of the array.
>
> Let's take a 20TiByte array as an example.
>
...
he did say 'very large'.
note, raid10 has another parameter... say you have a 20 drive raid10 of
1TB drives (10TB total usable). if one drive fa
Slightly OT...
Opensolaris has just had triple parity raid (raidz3) added to ZFS;
http://blogs.sun.com/ahl/entry/triple_parity_raid_z
Pity we can't get an in kernel version of ZFS for linux.
On Thu, Oct 1, 2009 at 12:41 PM, Stephen Harris wrote:
> On Wed, Sep 30, 2009 at 08:52:08PM -
On Wed, Sep 30, 2009 at 08:52:08PM -0500, Johnny Hughes wrote:
> On 09/24/2009 07:35 AM, Rainer Duffner wrote:
> > Well, it depends on the disk-size:
> > http://www.enterprisestorageforum.com/technology/features/article.php/3839636
>
> This info is VERY relevant ... you will almost ALWAYS have a
On 09/24/2009 07:35 AM, Rainer Duffner wrote:
>
> Am 24.09.2009 um 07:43 schrieb Fajar Priyanto:
>
>> Hi all,
>> Sorry for the OT.
>> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
>> The problem is, from the docs it says that it only supports either
>> RAID-DP or RAID4.
>> What I wan
Filipe Brandenburger wrote:
> Hi,
>
> On Thu, Sep 24, 2009 at 08:48, nate wrote:
>
>> RAID 6 has a pretty good performance hit vs RAID 5 due to the
>> extra parity disk, on some arrays the performance hit is even
>> greater as the array calculates parity twice, NetApp I think has
>> as good a R
Hi,
On Thu, Sep 24, 2009 at 08:48, nate wrote:
> RAID 6 has a pretty good performance hit vs RAID 5 due to the
> extra parity disk, on some arrays the performance hit is even
> greater as the array calculates parity twice, NetApp I think has
> as good a RAID 6 implementation as there is, though t
On Thu, Sep 24, 2009 at 8:48 PM, nate wrote:
> It's the array's way of saying it's not really safe to operate a
> 14 disk RAID-4 group in the event of a drive failure. Also performance will
> suffer greatly with such a large data:parity drive ratio.
>
> NetApp RAID DP (what you have):
> http://www
[re-sending with the right email address, hoping the first
email won't make it through..]
Fajar Priyanto wrote:
> Hi all,
> Sorry for the OT.
> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
> The problem is, from the docs it says that it only supports either RAID-DP
or RAID4.
> What
Am 24.09.2009 um 07:43 schrieb Fajar Priyanto:
> Hi all,
> Sorry for the OT.
> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
> The problem is, from the docs it says that it only supports either
> RAID-DP or RAID4.
> What I want to achieve is Max Storage Capacity, so I change it from
Fajar Priyanto wrote:
> Hi all,
> Sorry for the OT.
> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
> The problem is, from the docs it says that it only supports either
> RAID-DP or RAID4.
> What I want to achieve is Max Storage Capacity, so I change it from
> RAID-DP to RAID4, but wit
On Thursday 24 September 2009, Fajar Priyanto wrote:
> Hi all,
> Sorry for the OT.
> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
> The problem is, from the docs it says that it only supports either
> RAID-DP or RAID4.
> What I want to achieve is Max Storage Capacity, so I change it f
Fajar Priyanto wrote:
> Hi all,
> Sorry for the OT.
> I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
> The problem is, from the docs it says that it only supports either
> RAID-DP or RAID4.
> What I want to achieve is Max Storage Capacity, so I change it from
> RAID-DP to RAID4, but wit
Hi all,
Sorry for the OT.
I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1.
The problem is, from the docs it says that it only supports either
RAID-DP or RAID4.
What I want to achieve is Max Storage Capacity, so I change it from
RAID-DP to RAID4, but with RAID4, the maximum disk in a RAID
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