sorry, I take back what I said earlier, I didn't read through the whole thread
of the mail.
My workaround to the single stream of staging II in DSSU is to define multiple
DSSU, and put them in same storage unit group, define proper maximum jobs per
storage unit to split the backup data to different DSSU. So in the staging II,
I will have multiple streams to drives.
-----Original Message-----
From: Liao, Dongfang
Sent: Friday, February 04, 2005 9:58 AM
To: 'Rob Worman'; Weber, Philip
Cc: 'veritas-bu AT mailman.eng.auburn DOT edu'
Subject: RE: [Veritas-bu] Disk Staging & Storage Unit Groups
you should be able to do that by in-line copy in staging two for the first
question.
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Rob Worman
Sent: Thursday, February 03, 2005 11:48 AM
To: Weber, Philip
Cc: 'veritas-bu AT mailman.eng.auburn DOT edu'
Subject: Re: [Veritas-bu] Disk Staging & Storage Unit Groups
Philip-
1. No, it's currently not possible to relocate from a DSSU to multiple
tape drives. Also a rumored feature of the next big release though...
2. No, multiple retentions won't get duplicated to the same tape. There
is a setting to "allow multiple retentions per media", but it's not a
good idea in most environments. (too easy to end up with an almost-empty
tape that never expires due to a single long-retention image)
HTH
rob
On Thu, Feb 03, 2005 at 02:35:15PM -0000 or thereabouts, Weber, Philip wrote:
> Another coupld of questions :
>
> 1. Is it possible to make it disk stage to more than one tape drive in
> parallel, i.e. multistream? It seems like one disk staging area will only
> use one tape drive at a time, which is a shame.
>
> 2. Do multiple retentions get duplicated to the same tape? Seems to me that
> now we have set some infinite-retention backup schedules, all of our tapes
> are going to be infinite-retention.
>
> Thanks, Phil
>
> -----Original Message-----
> From: Paul Keating [mailto:pkeating AT bank-banque-canada DOT ca]
> Sent: 03 February 2005 13:22
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: RE: [Veritas-bu] Disk Staging & Storage Unit Groups
>
>
> In theory, I agree...in practice, I haven't found it worked that well..
> :o(
>
> The reason I'm having issues is due to only having a 90 Gig DSSU. To
> backup 5 machines, each with around 15-20 gigs of data......(total of
> all 5 is about 80 gigs.)
>
> However, we're using the DSSU (comprised of left over un allocated space
> on a couple disks) to back these machines up over a 10M excrypted link,
> which only passes about 300KB/s, and we can't afford to have these 5
> machines consume a tape drive for 20+ hours for full backups.
>
> We do have a Enterprise storage solution going online in Q3, so
> hopefully I'll get a SAN attached Terabyte DSSU then!
> ;o)
>
> Paul
>
> > -----Original Message-----
> > From: Rob Worman (home) [mailto:rob AT worman DOT org]
> > Sent: February 2, 2005 10:14 PM
> > To: Paul Keating
> > Cc: veritas-bu AT mailman.eng.auburn DOT edu
> > Subject: Re: [Veritas-bu] Disk Staging & Storage Unit Groups
> >
> >
> > Paul: "It is a good idea to have fulls and incrementals go to
> > different
> > DSU's"
> > If a backup to a DSSU encounters a diskfull error, the
> > following results:
> > (1) pause the backup
> > (2) expire up to two [this number was recently upped to
> > ten] of the
> > oldest images that have been duped to tape
> > (2a) if there are no images to expire in (2), fail the
> > backup with
> > an 84
> > (3) resume the backup; if another diskfull condition occurs, see
> > step (1)
> >
>
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