In couple environments we noticed extremely slow backup performance for windows hosts eg:
[Normal] From: VBDA@hostname "hostname [/C]" Time: 10/10/2016 1:03:30 PM
STARTING Disk Agent for hostname:/C "hostname [/C]".
And it completes hours later with run time of just 1 hour:
[Normal] From: VBDA@hostname "hostname [/C]" Time: 10/10/2016 9:07:13 PM
Backup Profile:
Run Time ........... 1:01:29
Backup Speed ....... 7.18 MB/s
It was discovered that this behavior is caused by McAfee AV solutions option scanning files opened for backup
https://kc.mcafee.com/corporate/index?page=content&id=KB72334
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When backing up data, such as when using Symantec Backup Program, performance can be as much as two to three times slower than usual. In some cases the server stops responding.
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