Re: [Networker] Query in Staging from adv

On 8/19/08 11:46 PM, Preston de Guise wrote:

However, I certainly remain hopeful of seeing some changes to AFTD inNetWorker Real Soon Now, as it's starting to get annoying that westill can't:
- Run multiple stage operations
- Run multiple clone operations
- Failover a saveset from one DBU to another if it fills
- Better balance backups so that a small number of DBUs see adisproportionate number of backups due to 'archaic' tape based volumeselection algorithms

I absolutely agree.

I also believe that we should be able to clone an SSID and perform arecover from that SSID at the same time.

The one unique item is the staging. This is really a clone (yes, itreally does change the cloneid!) followed by the removal of the originalcopy from the AFTD. Here, EMC needs to break it up into two separateoperations so that the clone portion will allow cuncurrent clones andrecovers to happen from the same SSID -- and then when it gets to thedeletion step wait for any current clones/recovers to finish whileblocking new ones from using this copy (make them go after the new copythat was just written to the staging target).

It sounds simple -- but I realize that for EMC to do this, they need tomove their locking logic from the volume level to the SSID level. As aprogrammer -- I realize that's a huge change.I have a sad suspicion that NetWorker may never be able to make thatchange. Because disk is so different from tape, it may be that someonehas to develop new backup software that recognizes the backup target isa hard disk and from there it will be cloned and staged to tape (sorecovers from tape have to work too) -- but the media management logicneeds to address the best utilization of a hard disk. Of course, oncesomeone does that.... VTLs will no longer be necessary or even desirable.


--
Frank Swasey                    | http://www.uvm.edu/~fcs
Sr Systems Administrator        | Always remember: You are UNIQUE,
University of Vermont           |    just like everyone else.
 "I am not young enough to know everything." - Oscar Wilde (1854-1900)

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Re: [Networker] Query in Staging from adv_file