Ed is correct in that the EMC BCVs need to be available to the host
for backups. Although it is not a filesystem issue, it is a volume
management issue if Veritas Volume Manager is what is in use. Since
it is a block by block copy, that includes the private region which does
cause
confusion. The simplest thing can generally be importing and mounting
the volumes on a different host. There are Veritas NetBackup
options (Off Host Backups and the EMC option for BCVs), but
be careful if going that route under 4.5 with licensing, you have to
have the
off host option in order for the SYMAPI calls to take place I believe.
Since
most likely the host with the production volumes has control over the BCVs,
the calls to the Symetrix need to come from there.
Thanks
Peter
Ed Wilts wrote:
>On Thu, Jan 29, 2004 at 03:32:07PM +0100, Hampus Lind wrote:
>
>
>>I have a litle problem. One of our systems is very censitive and they
>>dont wont to give us direkt acess to there server. BUT they us EMC
>>disk for there applications and have asked me if we can do a cypteted
>>backup from there EMC disks.
>>
>>Now to my question: The system runs on Windows platform and our master
>>runs hpux 11.i. We us netbackup 4.5 FP5. We are thinking about
>>makeing BCV copies of there disks and some how backup the data from
>>the BCV copies.
>>
>>How can i do that, is there any way to make a backup directly from a
>>BCV copy or must i mount the copy on another machine first?
>>
>>
>
>The first thing you need to understand is that for the EMC Symmetrix,
>where the BCVs are usually found, the Symmetrix is simply a disk
>controller. A very good, expensive one, but basically just a disk
>controller. As such, you can't expect to back up a BCV volume without
>making it available to a host somewhere first. So, yes, you do need to
>mount the volume. We do it here for our Oracle backups.
>
>Mounting that disk gets a bit tricky since it's an identical
>block-for-block copy of the original. File systems like the Veritas
>file system will not let you mount the split BCV copy on the same
>server. I don't know about HP-UX's file system. We mount them on a
>special backup server which is also a media server (Solaris, not HPUX).
>
>
>
>>Fine, this may not be the end of the world to fix, but how about the
>>crypting stuff? The data is not crypted on the disks, but the want it
>>to become crypteted in the backup system.
>>
>>
>
>Netbackup does offer an encryption component although I've never used
>it. A quick google search for "netbackup encryption" came up with a few
>links to Veritas pages, including
>http://www.veritas.com/nbuguided/nbu_3a.html
>
>
>
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