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тАО01-20-2005 12:57 AM
тАО01-20-2005 12:57 AM
Tape Throughput
do anyone know about system tools or scripts to measure throughput of a tape? pv or glance can do that?
thanx.
s.
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тАО01-20-2005 01:07 AM
тАО01-20-2005 01:07 AM
Re: Tape Throughput
Then we do the math. I'm working on a perl script for someone else that can be altered to produce these figures for you based on the size of the file.
However you calculate it the tape drive will perform far below the theoretical full speed for the tape device scsi channel configuration.
If you want to wait a few hours, I can post a script for you. I've got to get the original working to spec first.
:=)
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО01-20-2005 01:18 AM
тАО01-20-2005 01:18 AM
Re: Tape Throughput
I'll do the math.
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тАО01-20-2005 01:21 AM
тАО01-20-2005 01:21 AM
Re: Tape Throughput
when I had a look at our HP fbackup logs:
fbackup(1004): session begins on Wed Jan 19 19:00:00 2005
fbackup(1005): run time: 12245 seconds
fbackup(3055): total file blocks read for backup: 26996863
fbackup(3056): total blocks written to output file /dev/rmt/4m: 27166191
On sun it is even easier:
DUMP: 2988030 blocks (1459.00MB) on 1 volume at 1873 KB/sec
Regards
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тАО01-20-2005 01:23 AM
тАО01-20-2005 01:23 AM
Re: Tape Throughput
http://h18006.www1.hp.com/products/storageworks/ltt/index.html
live free or die
harry d brown jr