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Backup Speed Variance

Jay_Waschak
Level 3

‎05-03-2007 05:22 AM

Hello All,
 
I have a quick question which may not be too hard for some of you to answer.  I have an LTO Tape drive attached to my media server, and I am running BE 10d.  I have several Windows servers that are backed up nightly and my question revolves around backup speeds...
 
Since most of the servers run on RAID setups with their drives, I know the drives are the same type and speed and yet there are certain servers where one drive will backup at say 800 MB/Min and then another drive on the same server will backup at 400 MB/Min....these are not SQL servers, but rather just good old fashioned file servers and applications servers.  I just don't get why there is such a speed difference?
 
Can some of you shed some light or give me some places to look for what might be causing a lag in performance like this?
 
Thanks
 
Jim Piller
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Ken_Putnam
Level 6

‎05-03-2007 08:22 AM

Do the slow servers have a lot of directories and fairly small files while the faster ones fewer folders and relatively larger files?
 
A lot of small files totaling the same size as a few large files will always backup slower. There is nothing you can do about it.
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