Networker

Re: [Networker] NDMP backup to disk using 7.2

2005-10-10 11:18:56
Subject: Re: [Networker] NDMP backup to disk using 7.2
From: Matthew Huff <mhuff AT OX DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Mon, 10 Oct 2005 11:13:48 -0400
How much disks are attached to the NetApp?

Couple of things I'd recommend:


1) Use a separate gigabit ethernet card in both the NetApp and the
backup server either using a separate LAN or VLAN
2) Enable jumbo frames on ethernet switch, NetApp and Linux box for
those interfaces
3) make sure to tune your tcp/ip, especially making sure you are using
TCP window scalling and increase your window buffer sizes. For solaris I
have:

ndd -set /dev/tcp tcp_max_buf    4194304
ndd -set /dev/tcp tcp_cwnd_max   2097152
ndd -set /dev/tcp tcp_xmit_hiwat 1048576
ndd -set /dev/tcp tcp_recv_hiwat 1048576
ndd -set /dev/tcp tcp_tstamp_always 1
ndd -set /dev/tcp tcp_wscale_always 1


4) Break up your volumes into as many qtree's as possible and setup the
Legato Client to back up via qtree's rathern than volumes. This
increases your parallelism
5) Increase your client, server and tape parrallelism to increase
throughput. 


----
Matthew Huff       | One Manhattanville Rd
Dir of Operations  | Purchase, NY 10577
OTA LLC            | Phone: 914-460-4039
www.otaotr.com     | Fax: 914-460-4139   



 

> -----Original Message-----
> From: Legato NetWorker discussion 
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of Kilpatrick, Mark
> Sent: Monday, October 10, 2005 10:48 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: [Networker] NDMP backup to disk using 7.2
> 
> Hello, legato networker 7.2 supports NDMP backups to Disk. I 
> am interested in any tips or 'known issues' that any Legato 
> users of this method have to share. We will be using Legato 
> Server 7.2 on Linux platform with direct attached fibre disk 
> and Netapp Filers with Ontap 6.x
> 
>  
> 
> Is the client configuration any different from setting up an 
> NDMP client using backup to NDMP tape device.
> 
>  
> 
> Thanks in advance, Mark
> 
>  
> 
> 
> 
> 
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