Networker

Re: [Networker] Need help in DDS

2002-08-18 21:35:04
Subject: Re: [Networker] Need help in DDS
From: Lee Hwan Meng <hwanlee AT SOFTHOME DOT NET>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Sun, 18 Aug 2002 21:37:52 -0400
In my environment, I have one old library attached to server A; now the new
library arrives and attached to server B. I want Server A to see the old
library as well as server B to see new library at the same time. No library
is being shared here. However, Networker disallowed this upon detecting 2
nsrd running in the network. Why is this so?

Maybe this acts as a safety catch. Networker conveniently assumes some 2
servers are sharing one library when it detects 2 nsrd running, no?


On Fri, 16 Aug 2002 08:39:48 -0700, Wes Ono <wono AT LEGATO DOT COM> wrote:

>SAN is not relevant to this problem.  The issue is that one NetWorker
server
>cannot act as a storage node for another NetWorker server.  NetWorker would
>behave the same way in a non-SAN environment.
>
>You CAN have more than one NetWorker server in a SAN.  If you want the two
>servers to share a library, then you need AlphaStor or SmartMedia.
>
>Hope this helps,
>
>Wes
>
>-----Original Message-----
>From: Lee Hwan Meng [mailto:hwanlee AT SOFTHOME DOT NET]
>Sent: Friday, August 16, 2002 7:22 AM
>To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
>Subject: Re: [Networker] Need help in DDS
>
>
>Well, not really. In a SAN environment, the backup server would complain if
>it discovers another storage node running nsrd daemon. The recurring
>irritating and unhelpful message goes like:
>
><time> <backup server> root: [ID 702911 daemon.notice] NetWorker media:
>(notice)check storage node: <storage node> (a server cannot be a storage
>node)
>
>I am not too sure why you cannot have >1 backup server in a SAN (though you
>can have another backup server OUTSIDE SAN but in the same backup LAN). The
>only reason I can think of is maybe this prevents a mix-up in backup
>indexing when you do backup from one of the backup server to the other
>backup server-connected tape library. However, if you specify the '-s' flag
>in save, there won't be any confusion.
>
>
>
>On Fri, 16 Aug 2002 11:31:08 +0200, =?iso-8859-1?Q?Bj=F6rn_Lundstr=F6m?=
><bjorn.lundstrom AT PROACT DOT SE> wrote:
>
>>Hi,
>>
>>you can have as many backup servers and tape libraries as you want in a
SAN
>>environment.
>>
>>I think what you really are talking about is sharing a tape library
between
>>backup servers,
>>is that right ?
>>
>>In case that is what you want to do Legato offers this with their
>products ,
>>SmartMedia and AlpaStor.
>>
>>///Björn
>>
>>-----Original Message-----
>>From: Matts Nilsson [mailto:matts_nilsson AT YAHOO DOT COM]
>>Sent: den 16 augusti 2002 10:57
>>To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
>>Subject: Re: [Networker] Need help in DDS
>>
>>
>> A bit off topic, but why isn't it possible to have
>>more than one backup server in a SAN?
>>
>>// Matts
>>
>> --- Lee Hwan Meng <hwanlee AT SOFTHOME DOT NET> skrev: > In
>>any case, in a SAN environment, you cannot have 2
>>> backup servers, even
>>> though they may be talking to different storage
>>> volume.
>>>
>>> Anyway, one solution given to me was to adjust the
>>> startup script
>>> (/etc/init.d/networker) so that backup server daemon
>>> nsrd is not started on
>>> the storage node when used as client. Of course,
>>> when used as backup server
>>> to the old library, stop nsr and uncomment off nsrd
>>> in the startup script
>>> again.
>>>
>>>
>>>
>>> On Thu, 8 Aug 2002 07:19:46 -0500, Rohrich, James
>>> <rohrich AT UOP DOT COM> wrote:
>>>
>>> >Assuming you have a license, you also have to load
>>> the storage node
>>> software
>>> >on Server B. This might mean unloading the backup
>>> server software on the
>>> >Server B first and then load the storage node
>>> software. Becareful if server
>>> >B was running as a backup server since you might
>>> lose data. A storage node
>>> >does not save indexes since they are only kept on
>>> the backup server. Make
>>> >sure you are doing what you want.
>>> >
>>> >-----Original Message-----
>>> >From: Lee Hwan Meng
>>> >To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
>>> >Sent: 8/8/02 5:31 AM
>>> >Subject: [Networker] Need help in DDS
>>> >
>>> >Hi
>>> >
>>> >Our environment:
>>> >
>>> >Server A (Networker backup server)
>>> >Server B (Storage nodes)
>>> >Using SAN, DDS enabled for both sharing 6 drives on
>>> tape library
>>> >
>>> >When Server B is configured also as Networker
>>> backup server, I got this
>>> >error messages:
>>> >
>>> >Aug  8 10:18:19 A root: [ID 702911 daemon.notice]
>>> NetWorker media:
>>> >(notice)
>>> >check storage node: B (a server cannot be a storage
>>> node)
>>> >
>>> >The point is, I have some data backed up in a
>>> smaller library before the
>>> >arrival of this 6-drive monster, in order to
>>> retrieve the data, I need
>>> >to
>>> >attached Server B to the smaller library, so Server
>>> B also needs to be a
>>> >backup server. How can I achieve that? Is it
>>> possible to do it?
>>> >
>>> >Thanks.
>>> >
>>> >Regards
>>> >Hwan Meng
>>> >
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>>_____________________________________________________
>>Gratis e-mail resten av livet på www.yahoo.se/mail
>>Busenkelt!
>>
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