On 5/28/2013 4:37 AM, Jean-Marc wrote:
...
> Back to what I read, I have a question:
> - are RAID0 and RAID10,f2 performances quiet similar in term of random
> read or not ?
Similar, yes. Identical, no.
> - and if there are not, why people are publish these kind of infos on
> the mdadm wiki ?
T
On Sun, 26 May 2013 19:21:57 -0500, Stan Hoeppner
wrote:
Hi Stan, hi everybody,
> Hopefully I'm teaching not only you, but others, that trying to
> optimized performance of a -2 disk- array is a waste of -your- time.
I have to say I was a little bit disappointed after this.
I took time to read
On 5/26/2013 5:40 AM, Jean-Marc wrote:
> OK. Thank's for your mail and sorry to make you loosing your time reading
> mine.
Don't apologize. I'm not wasting my time here. Quite the opposite.
Hopefully I'm teaching not only you, but others, that trying to
optimized performance of a -2 disk- arr
On 5/26/2013 4:26 AM, Richard Hector wrote:
> On 26/05/13 15:15, Stan Hoeppner wrote:
>> First there is no such thing as "RAID0". Second, "striping" is only fit
>> for temporary data. The OP is concerned with permanent data storage.
>
>>From mdadm(8):
>
>> Currently, Linux supports LINEAR md de
On Du, 26 mai 13, 00:36:43, Jean-Marc wrote:
> Hi guys,
>
> I am trying to measure the perf' of RAID arrays to be sure of the
> layout I'll use for my future set up.
>
> Based on this article, RAID10,f2 seems to be the best set up:
> https://raid.wiki.kernel.org/index.php/Performance
That articl
On Sat, 25 May 2013 18:32:59 -0500
Stan Hoeppner wrote:
Hi Stan,
> > May be I am doing something wrong.
>
> Yes, you are. You're using only 2 disk drives. The md/RAID10 module
> with two drives will perform nearly identical to RAID1.
>
> Adding insult to injury you are using 6GB partitions i
On Sat, 25 May 2013 18:32:59 -0500
Stan Hoeppner wrote:
Hi Stan,
> > May be I am doing something wrong.
>
> Yes, you are. You're using only 2 disk drives. The md/RAID10 module
> with two drives will perform nearly identical to RAID1.
>
> Adding insult to injury you are using 6GB partitions i
On 26/05/13 15:15, Stan Hoeppner wrote:
> First there is no such thing as "RAID0". Second, "striping" is only fit
> for temporary data. The OP is concerned with permanent data storage.
>From mdadm(8):
> Currently, Linux supports LINEAR md devices, RAID0 (striping),
> RAID1 (mirroring), RAID
On 5/25/2013 9:30 PM, green wrote:
> Stan Hoeppner wrote at 2013-05-25 18:32 -0500:
>> For two disks, use RAID1. PERIOD. End of story. Screwing with
>> anything else is a massive waste of your time. If you have 3 or more
>> disks, then you can worry about layouts.
>
> Or RAID0? That is, for 2
Stan Hoeppner wrote at 2013-05-25 18:32 -0500:
> For two disks, use RAID1. PERIOD. End of story. Screwing with
> anything else is a massive waste of your time. If you have 3 or more
> disks, then you can worry about layouts.
Or RAID0? That is, for 2 disks use RAID0 (performance gain) *or*
RAI
On 5/25/2013 5:36 PM, Jean-Marc wrote:
> Hi guys,
>
> I am trying to measure the perf' of RAID arrays to be sure of the layout
> I'll use for my future set up.
>
> Based on this article, RAID10,f2 seems to be the best set up:
> https://raid.wiki.kernel.org/index.php/Performance
>
> But if I crea
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