So full backup starting on fryday and ending on monday of 2.2Tb is the
problem.
Let me ramble a bit:
SDLT max backup speed (local) = 30 mb / sec
SDLT max backup speed (remote) is 10mb/sec on 100mb network
Max backup speed to local attached disk storage 30-40mb/sec
lets say 30mb/sec ~~ 100 GB / hour ~~ 2.5 Tb / 24 Hours
( if data can stream from the disks that fast, meaning many large to very
large files ).
Questions:
1) local or remote backups
2) local or remote adv_file disks
3) what kind of data (many small files, few large files)
4) why 18Tb of disk space for a backup of 2.2Tbyte (unless you want 5 weeks
online)
Anyway getting your data fast to the adv-file device would be priority, you
can then stage or clone to tape during the week (worst case)
You see, always more questions
Maarten ;)
On Wednesday 21 September 2005 12:12, you wrote:
> We currently do incremental backups to disk Monday-Thursday and then Friday
> we do a Full to Disk and then an automatic clone to Super DLT tape. The
> incrementals are in the region of 40 -50 gig and the Full backup is 2.4TB.
> We need to move over to AFT devices to allow read and write at the same
> time which would decrease our backup window which currently runs into
> Monday morning. I have 13 out of our 18 disks ready to be changed to AFT
> devices.
> I was planning on keeping as much of the current configuration the same as
> much as possible to make it easy to understand as the system is supported
> by an external company. Do you have any more advance after reading the
> extra info on this e-mail. In the meantime i will read the section in the
> admin guide.
>
> Regards
>
> [IMAGE]
>
> |+---------------------------------+--------------------------------------|
> |
> || "Maarten Boot | |
> || (CWEU-USERS/CWNL)" | |
> || <Maarten.Boot AT NL.COMPUWARE DOT COM| To:
> [email protected]|
> ||
> || > | E.EDU |
> ||
> || Sent by: Legato NetWorker | cc: |
> || discussion | Subject: Re: |
> || <NETWORKER AT LISTSERV.TEMPLE DOT EDU| [Networker] Resource/Guide/Link
> on |
> ||
> || > | applying Advanced File Type Devices|
> ||
> || 21/09/2005 10:54 | |
> || Please respond to Legato | |
> || NetWorker discussion; Please | |
> || respond to "Maarten Boot | |
> || (CWEU-USERS/CWNL)" | |
> |
> |+---------------------------------+--------------------------------------|
>
> Andrew,
>
> What is unclear is what you want to do with the disks.
>
> Are you planning to do disk only backups or Disk first and then stage to
> tape?
>
> There are limits on advanced file devices (as have been explaind before on
> this list). If a file device is full any running backup stream will not
> switch to a new disk automatic but will wait until space is availible on
> the./samba.co*
> original target disk.
>
> So in general (but your situation may differ) it is best to make a big
> single
> volume. But many more performance related issues play a role here too.
>
> Adv file devices can do read and write at the same time (with limits of
> course). Basically this means backups and staging can run at the same time.
> Or backups and recovers if the disk is used as a holding place for backups
> for some time.
>
> Many issues depend on what your targets are and how much data and how much
> time you have for backups and restores.
>
> I use disk backup only on a small scale for backing up laptop users during
> the
> day when my tapes are busy doing cloning. 18Tb of data is big for me so my
> advice could be wrong for your situation.
>
> A more complete picture is helpful for better advice.
>
> Maarten
>
> On Wednesday 21 September 2005 11:28, you wrote:
> > We currently have around 18TB of Disk, split up into 20 devices on
> > networker. I have expired and disabled 13 TB of disk so networker cannot
> > use them currently to enable us to change to AFT devices. What is the
>
> best
>
> > way to apply AFT devices to our set-up, do you have one big Volume that
>
> is
>
> > 13TB in size if so do i need to do anything different to your
>
> instructions
>
> > below. Any help is much appreciated.
> >
> > Regards
> >
> > [IMAGE]
> >
> |+---------------------------+--------------------------------------------|
> |
> > || "Maarten Boot
> |
> | |
> |
> > || (CWEU-USERS/CWNL)" | To: "Legato NetWorker
> > ||
> > || <[email protected]|
>
> discussion" |
>
> > || re.com> | <NETWORKER AT listserv.temple DOT edu>,
> > "Andrew
> > ||
> > ||
> > || | Bridgeman"
> > ||
> > ||
> > || 21/09/2005 10:08 |
>
> <andrew.bridgeman AT corusgroup DOT com> |
>
> > || |
>
> cc: |
>
> > || | Subject: Re:
>
> [Networker] |
>
> > || | Resource/Guide/Link on applying Advanced
> > ||
> > || | File Type
>
> Devices |
>
> |+---------------------------+--------------------------------------------|
> |
> > As far as I remember it is nicely explained in tne admin guide.
> >
> > Anyway question 1 is always: Do you have the proper license. Tier 1 is if
>
> I
>
> > recall well up to 1 Tbyte.
> >
> > After that its easy: (using the Unix Gui on 7.1.3)
> >
> > Media -> device -> Create:
> >
> > set the type to adv_file
> >
> > set the name to an existing directory like: /big/1
> >
> > and press apply
> >
> > You now have a adv-file device.
> >
> > Now label a volume from a pool there ( I use the default pool here )
> > The pool in my case is not used for anything else otherwise there is a
> > conflict where the data should go (tape or disk).
> >
> > after that you have a volume like Default.001.
> >
> > Direct some of your backups to go to this pool and switch on staging from
> > this
> > devices to a target tape pool.
> >
> > Please check the steps by reading the Admin manual
> >
> > Maarten
> >
> > On Wednesday 21 September 2005 09:45, Andrew Bridgeman wrote:
> > > Could someone tell me where i can get instructions on how to apply
> >
> > Advanced
> >
> > > File type devices to my Networker set-up.
> > >
> > > To sign off this list, send email to listserv AT listserv.temple DOT edu
> > > and
> >
> > type
> >
> > > "signoff networker" in the body of the email. Please write to
> > > networker-request AT listserv.temple DOT edu if you have any problems wit
> > > this
> > > list. You can access the archives at
> > > http://listserv.temple.edu/archives/networker.html or via RSS at
> > > http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
> >
> > --
> > Maarten Boot,
> > Compuware Europe B.V.
> > Hoogoorddreef 5
> > 1101 BA Amsterdam
> > Tel: +31 20 312 6511
> >
> >
> > (Embedded image moved to file: pic11023.jpg)
> >
> > **********************************************************************
> > This transmission is confidential and must not be used or disclosed by
> > anyone other than the intended recipient. Neither Corus Group Plc nor
> > any of its subsidiaries can accept any responsibility for any use or
> > misuse of the transmission by anyone.
> > **********************************************************************
>
> --
> Maarten Boot,
> Compuware Europe B.V.
> Hoogoorddreef 5
> 1101 BA Amsterdam
> Tel: +31 20 312 6511
>
> To sign off this list, send email to listserv AT listserv.temple DOT edu and
> type
> "signoff networker" in the
> body of the email. Please write to networker-request AT listserv.temple DOT
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>
> (Embedded image moved to file: pic03625.jpg)
>
> **********************************************************************
> This transmission is confidential and must not be used or disclosed by
> anyone other than the intended recipient. Neither Corus Group Plc nor
> any of its subsidiaries can accept any responsibility for any use or
> misuse of the transmission by anyone.
> **********************************************************************
--
Maarten Boot,
Compuware Europe B.V.
Hoogoorddreef 5
1101 BA Amsterdam
Tel: +31 20 312 6511
To sign off this list, send email to listserv AT listserv.temple DOT edu and
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