On Tue, 1 Apr 2008, MacKinnon, Gregory (G.R.) wrote:

>
>
>> -----Original Message-----
>> From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
>> [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf
>> Of Randy Samora
>> Sent: Tuesday, April 01, 2008 9:55 AM
>> To: VERITAS-BU AT mailman.eng.auburn DOT edu
>> Subject: [Veritas-bu] Backing Up Too Much Information
>>
>> I didn't think I'd ever say that but I am backing up too much data.  I
>> am running NBU 6.0 MP4, Windows Master/Media/Clients.  I have a client
>> with four 500GB volumes and my full backups from this weekend are
>> already at 1.7TB and still climbing.  I have seen this twice before and
>> it will end up backing up about twice as much data as is
>> actually on the
>> client so I can only assume it's getting everything twice.  Does anyone
>> know how and why this happens and do you have any suggestions on how to
>> avoid it.
>>
>> Thanks,
>> Randy
>>
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>>
>
> The only time I've seen this happen was in the olden days.
> If you had compression turned on in NBU and had hardware
> compression turned on on the tape drive, it would do strange
> things that resulted in huge numbers.
>
> Gregg

I f you are backing up 1 file and using a 256 KiB chunk size for your 
tape then it could/would be using 512 KiB for 2 1 KiB files 
(obviously compression/etc will help), that is why they look so big I 
believe..
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