9 Apr
2001
9 Apr
'01
9:53 p.m.
Is there anyone out there who backs up a filer directly to DLT via NDMP? I've seen a demo of an F740 backing up directly to a DLT 7000 and the throughput peaked at around 8MB/sec. I'd like to know actual vs. theoretical throughput for the same configuration, but with a DLT 4000.
Not really a netapp specific thing. A DLT7000 can sustain 5MB * compression ratio. So 2:1 could get you near 10MB/s. That jibes well with your observations.
A DLT4000 is supposedly rated at 1.5MB * compression ratio, so I'd expect somewhere around 3MB/s with compressible data.
Any netapp/network/application issues can only drag that value lower, not speed it up.
--
Darren Dunham ddunham@taos.com
Unix System Administrator Taos - The SysAdmin Company
Got some Dr Pepper? San Francisco, CA bay area
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