Re: [Networker] restore speeds on NT4.0 with Legato 6.xx

At 03:37 PM 10/24/02 -0400, Chad Poist wrote:

anyone have any estimates on how fast you can do a restore across a
network using legato?  I'm just curious what other people get, I think I
get about 3-6GB per hour, but it might be faster.


Hey, good name!    :-)


You didn't give enough information for an accurate answer.  Is this network
100baseT?  Fibre?

Do you have a dedicated backup network, or does your server share bandwidth
with production users?

You should be able to get about 25 Gbyte/hour to the tape drive(s) from the
backup server.  You'd need a network that could stream that fast, or else a
staging disk drive for high speed.

We've got a 100 Mbit/sec network for the backups, and we burst to 10
Mbytes/sec to the tape drives.  But the average is more like 8 Mbps.

On a restore, you are =very= dependent on the machine to which you are
restoring.  If to a FreeBSD box with Softupdates turned on, you should see
something close to wire speeds.  With Windoze NTFS, I don't really know how
fast it can go.

Summary:  Find your bottleneck (hints above) and work on it.


        -crl
--
Chad R. Larson (CRL22)    chad AT eldocomp DOT com
  Eldorado Computing, Inc.   602-604-3100
     5353 North 16th Street, Suite 400
       Phoenix, Arizona   85016-3228

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