Re: raid10n2/xfs setup guidance on write-cache/barrier

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Hi keld,

On Thu, Mar 15, 2012 at 11:25 PM,  <keld@xxxxxxxxxx> wrote:
> On Thu, Mar 15, 2012 at 02:07:25PM +0000, Peter Grandi wrote:
>> >>> I want to create a raid10,n2 using 3 1TB SATA drives.
>> >>> I want to create an xfs filesystem on top of it. The
>> >>> filesystem will be used as NFS/Samba storage.
>>
>> Consider also an 'o2' layout (it is probably the same thing for a
>> 3 drive RAID10) or even a RAID5, as 3 drives and this usage seems
>> one of the few cases where RAID5 may be plausible.
>
> Well, for a file server like NFS/Samba, you could also consider raid10,f2.
> I would think you could get about double the read performance compared to n2 and o2
> layouts, and also for individual read transfers on a running system
> you would get somthing like double the read performance.
> Write performance could be somewhat slower (0 to 10 %) bot as users
> are not waiting for writes to complete, they will probably not notice.

I also plan to try raid10f2. Did you do your own benchmarks or are you
quoting someone elses?
>
> best regards
> keld

thanks for chiming in. have a nice day

> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[ATA RAID]     [Linux SCSI Target Infrastructure]     [Managing RAID on Linux]     [Linux IDE]     [Linux SCSI]     [Linux Hams]     [Device-Mapper]     [Kernel]     [Linux Books]     [Linux Admin]     [Linux Net]     [GFS]     [RPM]     [git]     [Photos]     [Yosemite Photos]     [Yosemite News]     [AMD 64]     [Linux Networking]

Add to Google Powered by Linux