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Painfully slow network back-ups


pjmacl
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Back-up of Macs over 100BaseT Ethernet network is taking about 20 times LONGER than 6.1 with the exact same set up. (Days as opposed to a few hours for a 40G back-up.) All aspects are slow: scanning, matching, copying and catalog updating. Local client on same Mac as server is also slower than 6.1. The slow operation is making the system unusable, and I will have to revert to 6.1 until there is a fix or work around. Anyone else seeing this? Any ideas?

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Short version: I am seeing good speeds with latest software.

 

 

Long version

 

I had a lot of performance problems with the beta versions of Retrospect 8. I'm just getting set up with the release version. Initial backup speed was awful, but I discovered the external hard drive was showing up as USB 1 which rather crippled performance! Switching it to firewire and running full backups...

 

Retrospect Server running on iMac with 1 GB RAM (Console v8.0.608.1)

Local backup from internal hard drive to external firewire hard drive

Completed: 540819 files, 119.1 GB

Performance: 860.8 MB/minute (687.7 copy, 1150.2 compare)

Duration: 04:50:18 (00:07:11 idle/loading/preparing)

 

Backup of client v6.3.019 running on PPC Mac Mini over 100 Mb ethernet

Completed: 340507 files, 30.2 GB

Performance: 210.8 MB/minute (137.0 copy, 456.8 compare)

Duration: 05:05:09 (00:12:05 idle/loading/preparing)

Edited by Guest
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I'm getting about 140 MB/m via wireless backup. Using version 6 this was much higher and mostly well above 200 MB/m.

On average the clients send 2.5 - 3 MB/s to the Retrospect server.

 

Everything intel Core2Duo, 4 GB RAM, OS X 10.5.6.

 

The Mac mini that runs the Retrospect Engine has plenty of memory and CPU cycles available to perform the backup. But Retrospect isn't using it.

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I'm performing two wireless backups simultaneously at this moment. One runs at about 145 MB/m, the other at 115 MB/m.

So the server is capable of processing about 250 MB/m.

 

Then why is Retrospect not able to get this speed for a single backup, like version 6 used to do?

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