Networker

Re: [Networker] cloning to multiple tapes?

2003-01-24 10:01:18
Subject: Re: [Networker] cloning to multiple tapes?
From: Robert Maiello <robert.maiello AT MEDEC DOT COM>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Fri, 24 Jan 2003 10:01:35 -0500
Carter,

Did you hear if Networker 7 would clone to multiple devices when cloning a
tape...I had heard that one must backup to file devices (a seperate license
in Networker 7 now ) in order for a clone process to write to multiple devices.

I think its one of the most requested or needed features in Networker.  I
know some have scripts that do this now with success.   I still just have
multiple groups that clone at the same time.

Robert Maiello
Thomson Healthcare


On Thu, 23 Jan 2003 16:58:47 -0500, Fowler, Carter
<CFowler AT CITY.LONDON.ON DOT CA> wrote:

>I believe that this is the case with current versions of NetWorker.  I
think that cloning to multiple devices simultaneously is supported in
version 7.0.
>
>Carter
>Ext. 5711
>Cel. 870.4956
>cfowler AT city.london.on DOT ca
>
>
>-----Original Message-----
>From: calvin.thomas AT NACALOGISTICS DOT COM
>Sent: January 23, 2003 4:55 PM
>To: calvin.thomas AT NACALOGISTICS DOT COM; NETWORKER AT LISTMAIL.TEMPLE DOT 
>EDU
>Subject: Re: cloning to multiple tapes?
>
>I don't see why not. I only have one tape drive (in a jukebox) but if you
>have 2 tape drives each with a tape from a clone pool, it should work. I
>know you can clone from tape 1 to tape 2 and from tape 3 to tape 4
>simultaneously.  As I said the only question in my mind is this:  If you try
>to clone from file device1 to tape 1, and from file device1 to tape 2
>simultaneously, will the first clone session from the file device lock it so
>the second clone session is blocked from reading from the same file device?
>
>Calvin Thomas
>
>
>
>-----Original Message-----
>From: roger midway [mailto:rogermidway AT YAHOO DOT COM]
>Sent: Thursday, January 23, 2003 1:13 PM
>To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
>Subject: Re: [Networker] cloning to multiple tapes?
>
>
>Can you clone savesets to the same CLONE pool on
>different drives.  Meaning- I have the nsr server and
>storage node.  Can I spin a clone session (using
>scripts) using 2 drives on each to volumes from the
>same pool?
>
>RM
>
>
>--- "Thomas, Calvin" <calvin.thomas AT NACALOGISTICS DOT COM>
>wrote:
>> The options will only work if networker can
>> physically support the cloneing
>> to multiple tape drives.
>>
>> If you have multiple file devices, you could set up
>> one clone for each tape
>> drive, and triple your clone speed.
>>
>> If you have a single file device, Try this
>> experiment:
>> start a clone session with one ssid. After it is
>> saveing to tape, start
>> another clone session with another ssid, and see if
>> it can get access to the
>> file device.  If you can pull multiple save sets at
>> once, you are in luck.
>> Otherwise, you will have to change to multiple file
>> devices to clone from.
>>
>> I'll be interested in the results...
>>
>> Note: I have been working on several scripts to
>> stage (or clone) from disk
>> to tape.  I have one that works pretty good now.  It
>> finds all save sets on
>> the hard drive that are over a certain age, and
>> complete, and saves them to
>> tape one at a time. It also pauses in between each
>> save, and allows backups
>> to take over the file device. After the backup is
>> finished, it continues
>> with the next save in the list.  The only real
>> difference between cloneing
>> and stageing is staging can be done to any pool (not
>> just clone pools) and
>> after the stageing is done the save set is deleted
>> off of the hard drive.
>> For cloneing, I just use the automatic group
>> cloneing in networker.
>>
>> Calvin Thomas
>> UNIX System Administrator
>> NACA Logistics
>>
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Robert L. Harris
>> [mailto:Robert.L.Harris AT RDLG DOT NET]
>> Sent: Thursday, January 23, 2003 7:33 AM
>> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
>> Subject: [Networker] cloning to multiple tapes?
>>
>>
>> Setup:
>>   Backups run to local file devices,  kept there for
>> 2 weeks then
>>     cleaned off
>>   We clone Fulls to tape daily with a very simple
>> script that uses
>>     nsrclone and a list of SSID's
>>   We have 3 DLT drives
>>
>> Is there a way to tell legato to use multiple tapes
>> for cloning?
>> There's no -dev flag I can find or such.  It's
>> taking considerable time
>> to run the clones and some days will eat into
>> regular backup time.  If I
>> could tell it to run to use 2 or even 3 drives for
>> cloning at one time
>> it'd be a Good Thing (TM)...
>>
>> Thoughts?
>>   Robert
>>
>>
>>
>> :wq!
>>
>---------------------------------------------------------------------------
>> Robert L. Harris                     | PGP Key ID:
>> FC96D405
>>
>> DISCLAIMER:
>>       These are MY OPINIONS ALONE.  I speak for
>> no-one else.
>> FYI:
>>  perl -e 'print
>>
>$i=pack(c5,(41*2),sqrt(7056),(unpack(c,H)-2),oct(115),10);'
>>
>> --
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>
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