Mailing List Archive: Netapp: toasters

Nearstore option usage?

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mcdouga9 at egr

May 17, 2008, 9:54 AM

Post #1 of 3 (172 views)
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Nearstore option usage?

So we have some FAS3040 and a nearstore license and I'd like to figure
out how I can take advantage of it. It was required for A-SIS but I'd
like to look into identifying 'old' data in my largest volume and
segregating it off of fibre channel disks. What is required and how can
I get started? It seems hard to find info on NOW about this. The
closest thing so far was the following document which hints strongly at
the capability but not how. Any tips? Thanks.

http://now.netapp.com/NOW/products/NearStore_option/

nick at nicholasbernstein

May 17, 2008, 1:26 PM

Post #2 of 3 (158 views)
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Re: Nearstore option usage? [In reply to]

So, one of the pieces of info about any particular file or directory is
access times. Probably the simplest way to see what's being used the
most is something like:

|find /some/nfs/share/you/think/is/old/ -atime +30 -print

|

This will show all the files that have not been accessed in 30 days.
This, if you've got tons of little files, could be slow, but is very
accurate.

You can also look at the "stats show volume" command and look at your
ops. Trending this kind of stuff out into a db or even just weekly into
a spreadsheet can be pretty helpful. If you can automate the process and
have it generate some type of graphs then it's really easy to see
volumes start getting less and less accessed over time. That doesn't
really help you find old data w/in the volume, but if you can segment
your data using flexvols, that's helpful.

Another command that can be useful is "snap delta" it shows the change
rate between snapshots and can be a pretty good way of seeing rate of
change info.

-Nick

Adam McDougall wrote:
> So we have some FAS3040 and a nearstore license and I'd like to figure
> out how I can take advantage of it. It was required for A-SIS but I'd
> like to look into identifying 'old' data in my largest volume and
> segregating it off of fibre channel disks. What is required and how
> can I get started? It seems hard to find info on NOW about this. The
> closest thing so far was the following document which hints strongly
> at the capability but not how. Any tips? Thanks.
>
> http://now.netapp.com/NOW/products/NearStore_option/

--
Nicholas Bernstein
Technical Instructor, Consultant, technologist
http://nicholasbernstein.com

ggwalker at mindspring

May 18, 2008, 8:32 AM

Post #3 of 3 (146 views)
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RE: Nearstore option usage? [In reply to]

Nearstore _was_ required for A-SIS (not going forward, so I hear) and
also enables the filer to act more like a nearstore - that is, more
simultaneous snapmirror sessions. From what I can tell, there's nothing
else to it.

FWIW, it has nothing to do with using ATA storage and you can
'segregate' old data off of FC disks onto ATA with any filer - but it's
whole volume movement, nearstore doesn't help you with this. Sounds
like you need to look into an FPOLICY enabled archive solution (Brocade
has FLM, EMC has one via Rainfinity, Symantec has Enterprise Vault for
example).

Glenn

-----Original Message-----
From: owner-toasters[at]mathworks.com [mailto:owner-toasters[at]mathworks.com]
On Behalf Of Adam McDougall
Sent: Saturday, May 17, 2008 12:55 PM
To: toasters[at]mathworks.com
Subject: Nearstore option usage?

So we have some FAS3040 and a nearstore license and I'd like to figure
out how I can take advantage of it. It was required for A-SIS but I'd
like to look into identifying 'old' data in my largest volume and
segregating it off of fibre channel disks. What is required and how can

I get started? It seems hard to find info on NOW about this. The
closest thing so far was the following document which hints strongly at
the capability but not how. Any tips? Thanks.

http://now.netapp.com/NOW/products/NearStore_option/

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