2008-09-04 12:31 AM
I know that the dedupe feature for VTL is in beta test phase, but I can't find any documentation on this feature...
Has someone a technical doc on how the dedupe is implemented in the NetApp VTL ?
2008-09-08 12:12 PM
A techinical guide for users is being written as we speak. It will be available when VTL dedupe becomes generally available. In the meantime, NetApp customers can schedule a technical briefing under non-disclosure. Sorry for all the secrecy but dedupe is a very competitive these days, and we don't want to leak anything just yet :-)
Hope that helps,
2008-12-12 09:27 AM
deduplication is when you take data and learn how is compose . Netapp case on VTL works learning blocks of data ( 4 ) and only take the backup of the data has change.
please , maby this is not correct so take this solution like "beta"
Deduplications on VTL works 100% when pass 30 days and the VTL learn all the data .
2009-01-12 12:37 PM
VTL dedup use data block from 4k to 128k to make reference on a common storage space ( 10% percent on you VTL ) . when the tape is full , dedup will check this block and make reference of data , if the any reference exist on the common storage the data of this tape will delete to make free space, if not , dedup will create a reference of this data on the common storage.
my english is very bad? ,.. call 911 :P .
you maby need to read about data reference .
when dedup is working , the performance of VTL will go down but dedup has this cost!