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.
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.
-- Nicholas Bernstein Technical Instructor, Consultant, technologist http://nicholasbernstein.com
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@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Adam McDougall Sent: Saturday, May 17, 2008 12:55 PM To: toasters@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.
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Adam McDougall -
Glenn Walker -
Nicholas Bernstein