NV Version: 7.12
Application version: ontap V 7.0.0.x onwards
Plugin version: ndmp 6.302
Internal FAQ - NDMP backups generate larger tape backups than source data -
NB - this is not to made public on the web as it quotes netapp bug ids etc...
NDMP backups to tape generate dump volumes that are significantly larger in volume than the source data
held within the filer volume/qtree on disk.
There is known ontap issue - ref netapp Bug ID 152072 : -
If a data set has more than ~4,000 ACLs, then file data may be mistakenly
written out in addition to NT ACL data during Phase V (NT ACLs) of dump.
Symptoms of this bug include: Data written taking up significantly more
space than what is being dumped or dump appearing to loop in Phase V.
The workaround is to de-select the 'backup ACLS' option within the ndmp plugin options -
their is a fix listed for this fault within:
However if the deselection of the ACL backup option does not resolve this then it's another issue
currently bakbone NDMP R&D team have a fault call open with Netapp ref - #1221894
Please do supply this case reference to customers as it will be if no use to them and they need
to open a seperate call with netapp using their support contract.