IDS Forum

Are there issues when using RAW dbspaces on IDS 11

Posted By: Jim Cramer
Date: Tuesday, 27 July 2010, at 3:14 p.m.

HELP!

Here is another angle to the recent questions, and explanations
by Art, et. al, regarding using RAW instead of COOKED dbspaces
on IDS 11.5 running on Linux.

For reasons cited by Art and the others, I (the DBA) wish to use
RAW dbspaces when I move my instances to Linux (SUSE 11 SLES)
Virtual Machines on an ESX Server running VMWare.

But my Sys Admins here are refusing to allow RAW spaces and citing
all kinds of vague, generalized reasons why, such as:

1) the "host administration utilities" will not fly right
with Raw Spaces but will not be specific about what would
go wrong. In general, my sense is that they feel that
the Management Console and Tools for the ESX host might
see the Raw Dbspace and, because it does not contain not a formatted
filesystem, allocate it to something on the box.

2) using raw space will not allow the VMs containing the IDS
dbspaces to be backed up or fit into their backup strategy
and backup utility.

They cannot seem to understand that a normal backup utility
would not know how to deal with the dbspaces even if they
were Cooked.

3) that the "little bit" of performance that they claim I might
get with Raw will not pay back for the increased Sys Admin
overhead.

4) that they will use a Journaled File System (along with Cooked
dbspaces) because it is more robust, fault-tolerant, comes
back up quicker after a crash, etc.

Can anybody provide me with any concrete information/experience
that is related to the above points, particularly (1) .

Does anyone know if raw dbspaces can cause problems in a Virtual
Machine on a VMWare ESX Server.

If you have some info and have time to send it soon, that would
be appreciated because I am about to do battle over this with
our Sys Admins.

Thanks much in advance,

Jim Cramer
Database Administrator and
Applications Developer III
University of Iowa
College of Engineering
Engineering Computer Systems Support
1256 SC
Iowa City, Iowa 52245
(319)-335-5757
jim-cramer@uiowa.edu
jcramer@engineering.uiowa.edu
http://css.engineering.uiowa.edu
http://www.engineering.uiowa.edu
http://www.uiowa.edu

Messages In This Thread

• Are there issues when using RAW dbspaces on IDS 11
  Jim Cramer -- Tuesday, 27 July 2010, at 3:14 p.m.
  • RE: Are there issues when using RAW dbspaces on ID
    Wyza, Jonathon -- Tuesday, 27 July 2010, at 3:22 p.m.
    • RE: Are there issues when using RAW dbspaces o....
      jim-cramer@uiowa.edu -- Wednesday, 28 July 2010, at 11:15 a.m.
      • RE: Are there issues when using RAW dbspaces o....
        Wyza, Jonathon -- Wednesday, 28 July 2010, at 11:20 a.m.
        • RE: Are there issues when using RAW dbspaces o....
          jim-cramer@uiowa.edu -- Wednesday, 28 July 2010, at 11:48 a.m.
        • RE: Are there issues when using RAW dbspaces o....
          jim-cramer@uiowa.edu -- Thursday, 29 July 2010, at 9:55 a.m.
          • RE: Are there issues when using RAW dbspaces o....
            Wyza, Jonathon -- Thursday, 29 July 2010, at 10:34 a.m.
            • RE: Are there issues when using RAW dbspaces o....
              jim-cramer@uiowa.edu -- Thursday, 29 July 2010, at 10:56 a.m.
  • Re: Are there issues when using RAW dbspaces on ID
    Alexandre Marini -- Tuesday, 27 July 2010, at 3:30 p.m.
    • RE: Are there issues when using RAW dbspaces o....
      jim-cramer@uiowa.edu -- Wednesday, 28 July 2010, at 11:15 a.m.
  • Re: Are there issues when using RAW dbspaces on ID
    Art Kagel -- Tuesday, 27 July 2010, at 5:59 p.m.
    • Re: Are there issues when using RAW dbspaces o....
      Fernando Nunes -- Wednesday, 28 July 2010, at 4:18 a.m.
      • Re: Are there issues when using RAW dbspaces o....
        Art Kagel -- Wednesday, 28 July 2010, at 8:48 a.m.
        • RE: Are there issues when using RAW dbspaces o....
          jim-cramer@uiowa.edu -- Wednesday, 28 July 2010, at 11:40 a.m.
          • Re: Are there issues when using RAW dbspaces o....
            Art Kagel -- Wednesday, 28 July 2010, at 5:11 p.m.
      • RE: Are there issues when using RAW dbspaces o....
        jim-cramer@uiowa.edu -- Wednesday, 28 July 2010, at 11:31 a.m.
  • RE: Are there issues when using RAW dbspaces on ID
    Andrew Lennard -- Wednesday, 28 July 2010, at 12:19 p.m.

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