in my opinion, actually it will faster if we put one
object in one object too. But it doesn't assure of
balancing and safety issue, because it suppose to be
considered as a performance parameters. for safety,
stability and load balancing, I agree with Stephen (Hi
Stephen .. ).
It also depends on the configuration, if the 5's of
dbvol are considered as the mirrored to each other,
then I think it would be faster to put one object in
one object, that means one dbvol on one lv on on disk,
because for one process it will be handled at the same
time, pararel and no queuing. But once again, if it's
not, then the reliability is on the line ... am I
right?
salam,
# ./indra
--- Stephen Pole <stephenp AT PRTH.GEOBANK.PGS DOT COM>
wrote:
wrote:
> It's been a while since I've been here ... so here
> is my two cents worth.
> On my site I have 4 lv's across 4 pdisks and these
> are split across our 4
> SSA adaptors, split evenly across the two I/O buses
> of our system. I did
> the same thing for my disk storage pools as well as
> it saves a lot of disk
> I/O contention (I hope) I assume either AIX
> striping or SSA Raid Striping
> or whatever....
> Sooooo ... My initial reaction is to create the 5
> logical volumes across 5
> physical disks (ideally spilt across a number of
> adaptors) define the 5
> dbvols across the 5 lvs, (I assume they are
> striped?).
> We are about to re-look this ourselves with a new
> installation, I'd also
> welcome any thoughts on this. ... All in please !
>
> Cheers
>
> Which is best for performance?
> Create one AIX logical volume with 5 disk, then
> define 5 dbvol located in
> the one lv.
> OR
> Create 5 AIX logical volume, 1 lv per disk, then
> define 5 dbvol - one per lv
> .
>
> Thanks for your help. I am creating a new ADSM
> server and I want to get it
> right this time. :>
>
>
> Stephen Pole
> PetroBank Operations Manager - Asia Pacific
>
> Australia
>
> Level 4
> IBM Centre 1060 Hay Street
> West Perth WA 6005
> Australia
>
> Phone +61 8 9320 9000
> Fax +61 8 9320 9090
>
> Indonesia
>
> PetroBank Indonesia
> Wisma Pondok Indah, Level 12
> Jl. Sultan Iskandar Muda V TA
> Jakarta 12310
> Indonesia
>
> Telephone +62 21 769 6038
> Facsmile +62 21 769 8015
>
> Mobile +61 41 239 4435
>
> email: stephenp AT prth.geobank.pgs DOT com
> Web Adress : http://www.petrobankonline.com
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager
> [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
> Debbie Lane
> Sent: Friday, 11 May 2001 12:56 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: AIX lv and dbvol
>
> Which is best for performance?
> Create one AIX logical volume with 5 disk, then
> define 5 dbvol located in
> the one lv.
> OR
> Create 5 AIX logical volume, 1 lv per disk, then
> define 5 dbvol - one per lv
> .
>
> Thanks for your help. I am creating a new ADSM
> server and I want to get it
> right this time. :>
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