bytes transferred is less than data size on disk [du -sh output]

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PREDATAR Control23

Hi Folks,

We have performed archiving of a directory with -subdir=yes option. it got successfully completed without any failure but the bytes transferred is less than data size on disk [du -sh output]

Archive processing of '/gpfs3/home/iitmuser6/cfs.v2.1.6/HINDCAST/OUTPUT/MAY_hind/MAY_HIND_00_UTC/stream1/*' finished without failure.


Total number of objects inspected: 219,964
Total number of objects archived: 219,964
Total number of objects updated: 0
Total number of objects rebound: 0
Total number of objects deleted: 0
Total number of objects expired: 0
Total number of objects failed: 0
Total number of bytes inspected: 17.33 TB
Total number of bytes transferred: 17.33 TB
Data transfer time: 38,967.33 sec
Network data transfer rate: 477,660.99 KB/sec
Aggregate data transfer rate: 1,339,724.71 KB/sec
Objects compressed by: 0%
Total data reduction ratio: 0.00%
Elapsed processing time: 03:51:33
[root@iitmtsm07 backuplogs]#


but actually on disk it is 18TB where as in the above the tsm archive summary 17.33TB

Please let me the possible reasons for such conflict.
 
PREDATAR Control23

Is the data exactly 18TB, or is this rounded? What is the exact number reported by 'du -s'?

Is the total number of objects reported by TSM the same as reported by the system?
 
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PREDATAR Control23

Is the data exactly 18TB, or is this rounded? What is exact number reported by 'du -s'?

Is the total number of objects reported by TSM the same as reported by the system?

"output of du -s" :-

18624735296 /gpfs3/home/iitmuser6/cfs.v2.1.6/HINDCAST/OUTPUT/MAY_hind/MAY_HIND_00_UTC/stream1
 
PREDATAR Control23

Hi,

18624735296/1024/1024/1024=17.3456364274025

Looks like the numbers match.
 
PREDATAR Control23

I agree with Marclant - the numbers match. Just be aware of conversion: TB (tera bytes) is not the same as TiB (tebi bytes). The former has a divisor of 1000 while the latter has a divisor of 1024.

TSM reports in TiB.
 
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