06-24-2009 03:36 AM
06-24-2009 09:06 AM
06-24-2009 09:13 AM
06-24-2009 02:49 PM
06-24-2009 06:59 PM
VTL is just a tape library, from NetBackup's point of view, you do not need another type of license to use it.
You only need Enterprise Disk License when you want to buy the capacity based license - which you don't really have to.
Abe
06-25-2009 12:24 AM
It is going to depend on how many virtual tape drives you want to create. Each virtual tape drive
requires a tape drive license. It therefore can work out cheaper to buy the enterprise disk license
as opposed to multiple tape drive licenses. It also will depend on what process you are using
to duplicate the backups onto real tape (assuming from your post that you are). Some devices
support path to tape (i.e the real tape library hangs off the back of the vtl and netbackup uses an api
to get the library to write to tape using ndmp) which definately does require the enterprise disk licence.
06-25-2009 04:46 AM
06-25-2009 04:48 AM
06-25-2009 08:28 AM
06-25-2009 02:23 PM
06-25-2009 06:43 PM
You want to do something like, NetBackup backs up to VTL, then again it gets duplicated (migrated) off to the physical tape libraries.
For that to happen, the "path to tape feature" is not a must thing to have.
You can simply use the VTL's own feature (be it EMC or NetApp) to duplicate/mirror/migrate the backup images on the tape to the attached physical tape libraries/drives.
Good side of this is that you do not need to purchase the "path to tape feature" license, and you can decide either to duplicate as soon as the VTL backup is done, or specify duplicate window, or migrate only when more space is required.
With this, you can also utilize the "ghost tape" feature provided by VTL vendors, which is - even after you migrate/duplicate the image to physical tape, the image on the disk will be still retained as much as possible, so that restores can run faster.
Bad side of this is that your NetBackup catalog will not know where the backup images are located - NetBackup simply thinks there's only one tape library (the VTL) and the images are in the VTL, full stop.
If you are more concerned about cost/money, then yes you can calculate which option will cost more and purchase license.
If you are more concerned about performance and flexibility and NetBackup's catalog management capacity, then the path to tape feature will be your choice.
Abe
06-26-2009 12:35 AM
06-26-2009 01:53 AM
i appreciate abesama's comments but,
hi hammers09,
how can i use this two options you gave me,
you can use storage lifecycle policies which requires no addtional license
you can run scripts and us ethe bpduplicate command which requires no licenses
tx.
06-26-2009 12:18 PM
06-29-2009 01:40 AM
06-29-2009 07:28 AM
06-30-2009 05:13 AM
07-02-2009 01:28 AM
07-06-2009 01:33 PM