Veritas-bu

[Veritas-bu] Destaging Speed

2007-01-03 10:35:01
Subject: [Veritas-bu] Destaging Speed
From: steve.fogarty at gmail.com (Steve Fogarty)
Date: Wed, 3 Jan 2007 11:35:01 -0400
bash-3.00# iostat -zxn 5 | egrep 'device|rmt'
                    extended device statistics
    r/s    w/s   kr/s   kw/s wait actv wsvc_t asvc_t  %w  %b device
    0.0   92.6    0.0 23706.3  0.0  0.4    0.0    4.4   0  41 rmt/0
    0.0   66.3    0.0 16972.9  0.0  0.4    0.0    5.6   0  37 rmt/1

Shows the speed the tape drives are being written to (kw/s).  It updates
every 5 seconds.

Stve 

-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Martin,
Jonathan (Contractor)
Sent: Wednesday, January 03, 2007 10:57 AM
To: NB List Mail
Subject: [Veritas-bu] Destaging Speed

Never done DSSUs before.  I'm watching all my destaging happening during
the week from this weekend's backups  I noticed the duplication jobs
don't have a write speed on them.  How can I tell how fast the data is
being written during destaging?  I suppose I could script something to
compare job duration with amount of data written on the tape but I was
hoping there would be something easier / better?

Thanks,

-Jonathan

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