Veritas-bu

[Veritas-bu] DLT7000 Speed

2001-10-18 13:57:34
Subject: [Veritas-bu] DLT7000 Speed
From: Andrew Shinkarev <shinkara AT pprd.abbott DOT com> (Andrew Shinkarev)
Date: Thu, 18 Oct 2001 12:57:34 -0500
Benr, 


I would say it's pretty good speed for backups with compression 
working on client side. 
If you don't use compression the speed is low. 
I don't see much reasons to turn compression on client side, 
saving network traffic is not so big issue. 
For me backups w/o compression take twice less time then with it. 


> It seems like you are getting average speed.  At best I can get 10.5 GB/hour
> (1750kb/s) on my systems.  This is the max capacity I've found of a DLT7000
> on a standard SCSI interface.  Is the DLT7000 on SCSI interface?
> 
> Sandy
> 
> Message: 8
> From: benr AT cuddletech DOT com
> Date: Wed, 17 Oct 2001 16:34:51 -0700 (PDT)
> To: <Veritas-bu AT mailman.eng.auburn DOT edu>
> Subject: [Veritas-bu] DLT7000 Speed
> 
> Any thoughts on this?  I'm doing some big backups to a DLT7000 (via a ADIC
> Scalar 2x tape robot).  My backup is 400G and running on a single drive.
> It's currently averaging 1500k/s.  The problem with this speed is that comes
> out to 5.4G/hr.  Isn't that alittle slow?  Can NetBackup throttle drives and
> thus slow down my backup this way?  Or is there something I can look to
> change?  The disk system on the system (this is a local backup) isn't really
> being taxed, and it's a Fibre Channel disk system with striped volumes.
> The system is a Sun Enterprise 4500 running Solaris 2.6 with NetBackup 3.2.
> 
> Thanx
> 
> benr.
> 
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-- 
----
Andrew Shinkarev
Network Systems Specialist
Abbott Laboratories
(847) 9387559
shinkara AT pprd.abbott DOT com