Networker

Re: [Networker] How to use all tapes together?

2005-09-16 09:46:31
Subject: Re: [Networker] How to use all tapes together?
From: Robert Maiello <robert.maiello AT PFIZER DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 16 Sep 2005 09:45:40 -0400
You have multiple instances of the same client. Your then kicking off 
multiple groups on it..  I'm would guess that the group parallelism of
8 or 0 should not make much difference here..since each of your groups
has 8 savsets..a group parallelism of 0 or 8 will send 8 savesets to one
drive.

You then kick off a second group with an instance of this client. At
this point I'm going to guess the client parallelism is what's limiting
you...the client is only allowed to send 8 streams.   Try leaving 
everything as you have it and set the client parallelism to 32

After all that is what your trying to do..get 32 streams off of the 
client.  


Robert Maiello
Pioneer Data Systems


On Fri, 16 Sep 2005 12:43:39 +0300, =?iso-8859-9?Q?
Turgay_=C7avdar_=28Network_Grup_Ba=FEkan=FD=29?= <TCAVDAR AT ISKI.GOV DOT TR> 
wrote:

>There is only one client, with mounts i mean file system mounts. The 
client has exactly 32 mount with different sizes. We divide these mounts 
into four parts in each part there is 8 mounts (save sets 
as /data1, /data2 etc...). Each part's size is exactly 200GByte. Then we 
create 4 group(group1, group2, group3,group4), and assign these 8-mounted 
parts to groups. Every group has 8 mounts (save sets). The client 
paralellism is 8, group paralellism is 8, and drive target sessions set to 
8. We first start the group1 and 8 sesssion goes to drive1. Then we start 
group2, 8 session g oto drive 2. Then when we start group3 and group4, the 
next drives are not used. It waits fort he group1 and 2's session complete.
>
>-----Original Message-----
>From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT 
>EDU] 
On Behalf Of Maarten Boot (CWEU-USERS/CWNL)
>Sent: Friday, September 16, 2005 12:20 PM
>To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
>Subject: Re: [Networker] How to use all tapes together?
>
>Hi,
>
>There are several ways you could approach this but there are also 
obstacles.
>
>First i do not understand what you mean with mounts (is that filesystems, 
as
>in /data1, /data2, ... ).
>
>Second if you set the drive paralellism to 8 then because of client 
parallel
>is also 8 all 8 backups tend to go to only one drive. To force the use of 
4
>drives set dive paralellism to 1 or 2. With a client paralellism (you have
>only one client if I understand right), this will distribute the data 
streams
>to all drives.
>
>Now note: it is also important to understand how your data is organized on
>this 800Gb is this one big Raid box or are this separate dirives (not
>partitions) tell me more about that as it could influence the speed of 
your
>backup if you start reading 4 or 8 datastreams from the same disk/raidbox.
>
>hope this helps a bit and feel free to ask more
>
>Maarten
>
>On Friday 16 September 2005 07:51, Turgay Ç¡vdar wrote:
>> We are using networker version 7.1.2 and 4 tapes in the jukebox. We have
>> got one client and it has 800 GB of data (32 mount). We planned to 
divide
>> this 800GB of data to 4 parts (approx. 200GB and 8 mount in each part) 
and
>> use every tape so the Backup time will be very short. We create 4 group 
and
>> in the client we set for 8 mounts for every group. Server parallism is 
32,
>> client parallelism is 8, group parallelism is 8, each tape has a target
>> session value set to 8. In this configuration when we start 4 group only
>> two tapes are used. Why we cant use 4 drives at the same time? (Jukebox
>> parallism set to 4)
>>
>> 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
>
>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
>
>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
>=========================================================================

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

<Prev in Thread] Current Thread [Next in Thread>