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Explain this...

combato

ADSM.ORG Member
#1
Hi Pro's

I have a question regarding NDMP backup. I backup a Netapp volume snapshot of the size 4921GB via NDMP. I have virtualfilespaces and my datamover set up. Some volumes backup much more data to the storage pool than the actual size of the volume. How is this possible? Can anyone explain?

Df -h size of volume in netapp:
Filesystem total used avail capacity Mounted on
/vol/myvfiler4647_vol1/ 8192GB 4921GB 2052GB 75% /vol/myvfiler4647_vol1/
/vol/myvfiler4647_vol1/.snapshot 0GB 162GB 0GB ---% /vol/myvfiler4647_vol1/.snapshot

TSM virtualfs path:
tsm: MYTSMSERV4250>q virtualfs myfiler /myvfiler4647_vol1
Node Name Virtual Filespace Filespace Path Hexadecimal
Mapping Name Name Path?
--------------- --------------------- ----------- ------------------------- -----------
MYFILER /myvfiler4647_vol1 /vol/myvfiler4647_vol1 /.snapshot/2014_q4/snapvault No


tsm: MYTSMSERV4250>q pr
Process Process Description Process Status
Number
-------- -------------------- -------------------------------------------------
615 Backup NAS (full) NAS Node MYFILER, Source
/myvfiler4647_vol1 , Bytes Moved
7,777,958,297,600, Estimated 99% Completed with
Data Movement, Estimated 0% Completed with table
of contents Creation, Elapsed Time 120051
seconds. Current output volume(s): 000861L4.
tsm: MYTSMSERV4250>

I get 7,777,958,297,600 bytes to 7244GB

How is this possible?

/C
 

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