469,936 Members | 2,463 Online
Bytes | Developer Community
New Post

Home Posts Topics Members FAQ

Post your question to a community of 469,936 developers. It's quick & easy.

containers in the same FS

IBM recommends to place each ts container on a different physical disk.

What about the impacts if all containers (DMS) are in the same FS (supported
by multiple disks) ?

Does DB2 preallocate doing // IO, so we could assume to have, for 2
containers as exemple:

Ext1ct1, Ext1ct2, Ext2ct1, Ext2ct2

or will we get ct1 allocated first, then ct2 ?

Thanks for your help,

JM
Jan 11 '06 #1
1 2005
The general rule is to divide up data evenly between containers. Using
multiple disks allows parallel I/O to the different containers. When you
have multiple containers on a single disk (or set of disks - I assume
RAID) then the potential performance benefit of multiple containers is
lost.

DMS initially allocates the entire container size which will tie up the
entire space no matter how little data is actually stored.

You can now also add additional containers at a later date if your
initial set fills up. Commands also exist to resize DMS containers.

Phil Sherman

Jean-Marc Blaise wrote:
IBM recommends to place each ts container on a different physical disk.

What about the impacts if all containers (DMS) are in the same FS (supported
by multiple disks) ?

Does DB2 preallocate doing // IO, so we could assume to have, for 2
containers as exemple:

Ext1ct1, Ext1ct2, Ext2ct1, Ext2ct2

or will we get ct1 allocated first, then ct2 ?

Thanks for your help,

JM

Jan 12 '06 #2

This discussion thread is closed

Replies have been disabled for this discussion.

Similar topics

13 posts views Thread by Dylan | last post: by
14 posts views Thread by phil_gg04 | last post: by
18 posts views Thread by Matthias Kaeppler | last post: by
8 posts views Thread by Gregory | last post: by
2 posts views Thread by bob | last post: by
35 posts views Thread by dragoncoder | last post: by
15 posts views Thread by Nindi73 | last post: by
11 posts views Thread by jimxoch | last post: by
By using this site, you agree to our Privacy Policy and Terms of Use.