tvmo
14 years agoLevel 3
NDMP Compression
Hello,
I know that NDMP does support compression however I don't get an option to select it within my Netbackup 6.5 policy. Why is this?
Thanks
I think the NDMP standard is a bit limited in a lot of areas, but then again it is a standard, and all parties must agree to a level of conformity that all parties can see justifiable. Hence, a lot of nice features are left out.
Anyhow, compression has history really not been a problem with tape technologies supporting it and giving optimally 2:1 compression, and I could really only see NBU "native" compression usable in remote NDMP, where the data passes the media server.
With the new NDMP PureDisk streamer (currently only for NetApp I believe) can achieve a very good compression (de-dup + ZLIB or LZO compression) when using remote NDMP over the LAN. downside is still that all the data must move over the LAN...
The downside with NDMP is that the data stream is not standardized, only the management data, thus no generic handling of the stream format, leading to vendor specific implementations. Maybe NDMP v123? ;-)
/A