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calculation for free space after VTL deletion
Hi there ...
Can anybody tell me how to calculate free space after VTL deletion?
Example ...
# vtl tape show all
Barcode Pool Location State Size Used (%) Comp ModTime
-------- ------- -------------------- ----- ------- ------------------ ----- -------------------
DD0001L1 Default SCP_Admin slot 21 RW 300 GiB 298.0 GiB (99.33%) 1x 2017/04/11 16:00:18
DD0002L1 Default SCP_Admin slot 21 RW 300 GiB 298.0 GiB (99.33%) 1x 2017/04/11 16:00:18
Delete aboveVTLs should make 596GiB ( may be bit less as Metadata need to be considered for 0.5% as per https://community.emc.com/docs/DOC-31725) as Comp 1x . BUT in real life .... It only creates 446.8 GiB reduction of the space ... see below output after deleting VTLs.
Before Deletion ...
# df
Active Tier:
Resource Size GiB Used GiB Avail GiB Use% Cleanable GiB
---------------- -------- -------- --------- ---- -------------
/data: pre-comp - 122833.0 - - -
/data: post-comp 7715.0 5864.3 1850.6 76% 0.0
/ddvar 78.7 3.7 71.1 5% -
---------------- -------- -------- --------- ---- -------------
After Deletion of VTL
# df
Active Tier:
Resource Size GiB Used GiB Avail GiB Use% Cleanable GiB
---------------- -------- -------- --------- ---- -------------
/data: pre-comp - 122831.5 - - -
/data: post-comp 7715.0 6311.2 1403.8 82% 455.5
/ddvar 78.7 3.7 71.1 5% -
---------------- -------- -------- --------- ---- -------------
How come only 446.8 GiB is freed .
( if Comp 1x is actually x 1.33 , it does make sense .. so would Comp 1x is round about in output display ? )
thanks
aya
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