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June 11th, 2012 12:00
LTO-3 Tape drives - Approximate write speed and which drivers?
I am on 7.6.3 on 2008 R2. We have LTO-3 drives SCSI attached. What throughput for writes should I see? It never seems to get over 25/MBs or so. Should it be at 100 MB per second or is that potentially a realistic performacne #?
Also I had MS native drivers for the tape drives. I removed them and downloaded the correct IBM specific driver to help. Its tough to tell however, just watching a couple test runs.
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RFreund1
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June 12th, 2012 06:00
It depends on many other 'environmental' factors. But of course you should be able to run some tests to check how fast your drive can perform.
One of them is the 'bigasm' method, another one is 'tape_perf_test'. You will find more info in the docs.
ble1
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June 14th, 2012 06:00
Is that 25MB/s for stream coming from network, from local disk or from local memory?
sks20
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June 19th, 2012 07:00
Not sure if it helps...but we have the similar config
1. Windows 2008 R2
2. Networker 7.6.3
3. IBM TS2900 9 slot library with it's own drivers ( SAS attached)
And our average rate is 70 MB/sec ( backing up from the network)