> Date: Wed, 15 Feb 2012 19:05:24 -0800
> Subject: Re: deduplication, snapshots and performance questions
> From: netbacker@gmail.com
> To: rrue@fhcrc.org
> CC: toasters@teaparty.net
>
> On Wed, Feb 15, 2012 at 4:13 PM, Randy Rue <rrue@fhcrc.org> wrote:
> > Hello All,
> >
> > We're troubleshooting some performance issues and trying to determine how
> > deduplication might be might be muddying the waters on an already busy v3170
> > HA filer pair. There's also some likelihood that snapshots are involved.
>
> Why do you need to run the de-dup process daily? In our environment,
> we set the schedule to auto & let the filer manage it based on the
> threshold and still see very good de-dupe ratio and good performance.
> e.g.:
> Filesystem used saved %saved
> /vol/vmstore1/ 446GB 301GB 40%
> /vol/vmstore2/ 607GB 281GB 32%
> /vol/vmstore3/ 693GB 245GB 26%
> /vol/vmstore4/ 494GB 197GB 29%
> /vol/vmswap/ 81GB 95GB 54%
> /vol/vmstore5/ 1378GB 461GB 25%
> /vol/vmstore6/ 70GB 57GB 45%
> /vol/vmstore7/ 4598MB 624MB 12%
> /vol/vmstore8/ 329GB 109GB 25%
> /vol/vmstore9/ 446GB 90GB 17%
>
> sis status
> /vol/vmstore1 Enabled Idle Idle for 43:34:28
> /vol/vmstore2 Enabled Idle Idle for 10875:57:18
> /vol/vmstore3 Enabled Idle Idle for 41:50:19
> /vol/vmstore4 Enabled Idle Idle for 163:47:09
> /vol/vmstore5 Enabled Idle Idle for 25:51:08
> /vol/vmstore6 Enabled Idle Idle for 32:22:59
> /vol/vmstore7 Enabled Idle Idle for 27:20:30
> /vol/vmstore8 Enabled Idle Idle for 56:33:27
> /vol/vmstore9 Enabled Idle Idle for 50:51:38
> /vol/vmswap Enabled Idle Idle for 39:46:32
>
> Hope that helps
>
> -net
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