Hallo Terry,
You have to think slightly different.
With NDMP backup a process reads the disk and sends the data to another
process that writes it to tape.
With NDMP restore a process reads the data from tape and sends it to a
process that writes to disk
Key message are NDMP_MOVER_READ and NDMP_MOVER_LISTEN (MOVER = TAPE)
A clone with NDMP is half a restore with half backup ;-)
One process reads the data from tape and another process sends it back to
tape.
Btw. "process" is used loosely
Bye
Ernie
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On
Behalf Of Terry Lemons
Sent: Friday, September 23, 2005 3:57 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] NDMP Cloning
Hi Mike
I notice that you didn't get an answer, so I'll try one here, at least to
start some discussion.
I'm assuming that your Solaris version is a recent one (8 or 9).
So, if I'm understanding this, you want to:
- connect the library autochanger device to your Solaris NetWorker server
system
- connect four tape drives to your Solaris NetWorker server system
- connect four tape drives to your NetApp filer
First, I don't think an NDMP device can be a storage node. Second, I took a
quick search through the NDMP 3 or 4 specifications, and I didn't find clone
to be a supported feature. So, I'm not sure if the NDMP spec itself
supports the cloning/replication of media. If this isn't supported natively
by a NDMP system, then something (like a storage node) must provide that
feature.
But, since every NetWorker server is also a storage node, you could have the
NetWorker server perform the cloning, without needing to buy a storage node
license.
Hope this helps the discussion along.
tl
Terry Lemons
CLARiiON Appliance Engineering
CLARiiON Application Solutions Integration
EMC²
where information lives
4400 Computer Drive, MS D239
Westboro MA 01580
Phone: 508 898 7312
Email: Lemons_Terry AT emc DOT com
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On
Behalf Of Hawkins, Michael
Sent: Wednesday, September 21, 2005 4:39 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] NDMP Cloning
Presently we are running 7.1.3 on a Solaris server, Library is attached via
Fiber Bridge to the server. We want to make the 4 of our 8 LTO's drives
"directly attached" to our 4 netapp filers. Can we remove the snapimage
module [we only use it for the NDMP transport, no caching at all] upgrade
to 7.2 and use the new features of 7.2 to do our cloning without needing to
purchase storage nodes for the filers?
Honestly this whole thing has become such of a nightmare its ridiculous. 3
weeks ago we had a Legato engineer come out [Not a legato engineer but
legato trained] and told us that we needed storage nodes and DDS to make
this work. Just trying to filter through some truth here.
Mike Hawkins
TD Securities
Desk 312.244.2343
Cellular 312.656-0137
mike.hawkins AT tdsecurities DOT com <mailto:mike.hawkins AT tdsecurities DOT
com>
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