The issue with any compression technology
is the latency it adds to any workload and what happens with a large number of
people doing the same thing.
Would you not be better at looking at an
archiving product that can archive off the older files leaving stub files
behind so any application can carry on working with no interruption. Assuming
that the data is stored as lots of files.
Perhaps you need to look at some
traditional HSM type product that integrates with a tape library except instead
of using a physical tape library you use a VTL which will do the deduplication
and compression for you. You then have the added advantage that the VTL can
spit out copies of the virtual tapes to be taken off site for DR. This type of
solution should then be platform independent.
From: owner-toasters@mathworks.com
[mailto:owner-toasters@mathworks.com] On
Behalf Of Glenn Walker
Sent: 27 February 2007 03:18
To: Glenn Dekhayser; Wilbur
Castro; toasters@mathworks.com
Subject: RE: data management
through compression for Netapp
I’ve also heard good things about
Data Domain.
On the other hand, does anyone have any
experience with the A-SIS deDupe technology from NetApp? Sounds great,
except for the ‘out of band’ nature of it.
Glenn
From: owner-toasters@mathworks.com
[mailto:owner-toasters@mathworks.com] On
Behalf Of Glenn Dekhayser
Sent: Monday, February 26, 2007
8:36 PM
To: Wilbur Castro;
toasters@mathworks.com
Subject: RE: data management
through compression for Netapp
Wilbur:
What are your performance
requirements? Adding compression/deDup into this has a serious impact on
I/O performance, it will pretty much totally screw any read-ahead
optimization.
If you still want to go ahead, look at
Data domain's Gateway series. It doesn't formally support Netapp, but i'm
sure you could use it. This will do exactly what you want, as long as you
want NFS!
Glenn (the other one)
From:
owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Wilbur Castro
Sent: Monday, February 26, 2007
4:55 PM
To: toasters@mathworks.com
Subject: data management through
compression for Netapp
Hi toasters,
We have a couple of 100 TBs of heterogenous storage (some from netapp), and see
that our storage grows close to 60% over year. We were looking at alternatives
for managing this data growth. Compression was one of the techniques we were
considering for our nearline and (possibly) primary storage. Our applications
cannot change to do their own compression, so it boils down to doing this in
the storage layer or through an external device. Also, we'd like to not have
any performance impact and compression to happen transparently. Deduplication
technology from storage vendors would help, but it is not a hetrogenous
solution.
I am not aware of any compression technology from netapp. Are you folks aware
of any solutions? Would love to hear your experience with those or other
alternative ways you deal with the storage growth problem while managing costs.
Thx,
Wilbur