On 12/20/06, Blake Golliher <thelastman@gmail.com > wrote:

I'll admit I was pretty sure it was supported back in 04, when Netapp
announced that partnership with Veritas.  But I think I was wrong, or
at least I can't find any support for snapmirror to tape for Vertias.

-Blake

On 12/19/06, Sto Rage(c) < netbacker@gmail.com> wrote:
> Hello Blake,
>  You mentioned Veritas supports Snapmirror to Tape. Can you tell me
> which version? I have been trying to find documentation on Veritas's
> site on this but haven't found any. Are you or anyone else on this
> list using SM to tape with Veritas? Hope you can share some info on
> how this is done.
> TIA
> -G
>
>
> On 12/19/06, Blake Golliher < thelastman@gmail.com > wrote:
> > You might want to look into snapmirror to tape.  It's makes backing up
> > lots and lots of little files very fast.  The drawback is no
> > incremental backups anymore, every backup is a full backup.  And
> > restores are always a full restore.  If that's ok with you, Vertias
> > and Bakbone both support snapmirror to tape.
> >
> > -Blake
> >
> > On 12/18/06, saiful-rizal_muhd-ramli@agilent.com
> > <saiful-rizal_muhd-ramli@agilent.com> wrote:
> > >
> > >
> > >
> > >
> > > Askm Ammar,
> > >
> > >
> > >
> > > You don't happen to have volumes with millions of files do you?  This is
> > > what we have and it is slow backing these up…  We're only doing 2Mb/s on
> > > those so you are doing a lot better…  J
> > >
> > >
> > >
> > > BTW, our other volumes are doing 40+ Mb/s so number of files seem to be a
> > > factor…
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Best regards,
> > >
> > > --saiful
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >  ________________________________
> > >
> > >
> > > From: owner-toasters@mathworks.com [mailto: owner-toasters@mathworks.com] On
> > > Behalf Of Ammar Zolkipli
> > >  Sent: Tuesday, December 19, 2006 10:20 AM
> > >  To: toasters@mathworks.com
> > >  Subject: Re: V-Series with NDMP backup
> > >
> > >
> > >
> > >
> > >
> > > tmac,
> > >
> > >
> > >
> > >
> > >
> > > The tape drives are fiber channel, and the connectivity all goes through a
> > > cisco MDS san switch. We have 6 tapes in the system, and normally run 4 ndmp
> > > backupin parallel. The path to tape should be a 2gbps FC link. The back end
> > > infrastructure obviously was built to sustain a much higher bandwidth.
> > >
> > >
> > >
> > >
> > >
> > > I'll try to run the null device dump and come back with the results
> > >
> > >  Thanks!
> > >
> > >
> > >
> > >
> > >
> > > On 12/18/06, tmac <tmacmd@gmail.com> wrote:
> > >
> > > try dumping to a null device instead of tape to test raw speed without tape.
> > >
> > >  pick one of your dumps, and then do something like:
> > >  dump 0f null /vol/vol0
> > >
> > >  You can see how long the dump takes and compare it to tape.
> > >
> > >  How many simultaneous dumps do you do? are the tapes on FC or SCSI or
> > >  over the net?
> > >  how fast is the path to tape?
> > >
> > >  if it is over the net, did you check for any errors, like using netstat -a?
> > >
> > >
> > >
> > >  On 12/18/06, Ammar Zolkipli <ammar.zolkipli.lists@gmail.com> wrote:
> > >  > Gents,
> > >  >
> > >  > Let me first explain the overall layout. I've got a D2D2T design. Both
> > >  > primary and secondary filers are v-series, and snapvaulted. We have 16TB
> > > of
> > >  > CIFS home dir data volumes backing up to tape via NDMP. And the tape
> > > backup
> > >  > is on LTO-3 running at sustained throughput of 20mbps, (F**king slow, I
> > >  > know).
> > >  >
> > >  > Does anybody have experience how to speed up NDMP backup? At this point,
> > > the
> > >  > LTO-3 is shoe-shining as the minimum sustained throughput on that drive
> > > is
> > >  > 40mbps. And also, does anybody have any experience with NDMP to tell us
> > > why
> > >  > this is happening?
> > >  >
> > >  > Thanks
> > >
> > >
> > >  --
> > >  --tmac
> > >
> > >
> >
>