Hi Alain
As a rule, I would strongly discourage the use of magnetic tapes at remote
sites. Much has been written about why this is bad, so I won't repeat it
here. Instead, consider using backup-to-disk. For remote sites, I like to
have the disk receiving the backups be located at the remote site; after the
backups, clone the savesets to a central site. Thus, you have fast restores
at the remote site, but also have the data kept at the central site for
disaster recovery. PLUS, NetWorker knows about all of the copies, and so
can track them and (in NetWorker V7.3) set different browse/retention
policies for each copy of the saveset. And all creation of tape copies (if
needed) can be done by the experience IT staff at the central site.
You could put a small storage array at each remote site. Or, you could put
a large storage array at your central site, and do your backups over the
link. Either way, you should end up with one copy of your backups at the
central site. If you have lots of unused CPU cycles in your remote site
systems, you could enable NetWorker client-side compression to compress the
data before it goes over the link.
By the way, did you mean '10 megabytes per second' or '10 megabits per
second'? Knowing this would help us make sure that the (300 GB x 5%/day) =
15 GB per site fits within a reasonable backup window.
Hope this helps!
tl
Terry Lemons
CLARiiON Appliance Engineering
CLARiiON Application Solutions Integration
EMC²
where information lives
4400 Computer Drive, MS D239
Westboro MA 01580
Phone: 508 898 7312
Email: Lemons_Terry AT emc DOT com
-----Original Message-----
From: Alain Richard [mailto:alain.richard AT MRN.GOUV.QC DOT CA]
Sent: Wednesday, December 21, 2005 11:55 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU; Lemons, Terry
Subject: Re: Remote backups using legato
I every one,
I am in the process to install a backup solution for 15 remote site. I
would like to ask the group, what they are doing for thiers remotes sites
backup. Almost all my remotes sites have a 10MB link with us. We have to
install new server in each site. We scale a maximum of 300GB of data per
site with 5% of data movement per day. We estime a stadart backup solution
with a Networker licence/tape backup/cartrige at 10K$. So we have at 150K$
to spend.
Can we do better with that 150K$? We love to remove the backup from the
user hands and make them centraly. Saddly, we have to choose the solution
rapidly, so not much time to test.
I am looking for your reply.
Alain.richard AT mrnf.gouv.qc DOT ca
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