queue_depth
>> on the hdisk. That's why spreading I/O across as many hdisks/luns as
>> possible is advantageous.
>>
>> Rick
>>
>>
>>
>> -Original Message-
>> From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
>
ndom I/O at disk system
then we use very few VG's with LV's spread across the luns.
Rick
-Original Message-
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of David
Bronder
Sent: Wednesday, July 15, 2015 10:24 AM
To: ADSM-L@VM.MARIST.EDU
Subject:
s
> possible is advantageous.
>
> Rick
>
>
>
> -Original Message-
> From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
> Huebner, Andy
> Sent: Wednesday, July 15, 2015 9:33 AM
> To: ADSM-L@VM.MARIST.EDU
> Subject: Re: Disk layout
rom: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Huebner, Andy
Sent: Wednesday, July 15, 2015 9:33 AM
To: ADSM-L@VM.MARIST.EDU
Subject: Re: Disk layout for AIX
He claims there is a queuing issue with too many at the HBA. I guess I missed
that the last 12 years of being a st
Each VG will be 2 or 4 LUNs from SVC.
I am not worried about the logs and storage pools. Only the DB.
Andy Huebner
-Original Message-
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Barkes, Jason
Sent: Wednesday, July 15, 2015 8:54 AM
To: ADSM-L@VM.MARIST.EDU
S
Hi, Sorry David I don't understand the VG's are cheap statement.
Your Volume groups are made up of 1 or more hdisks provided locally or from the
SAN.
I've split my VG's into 5 types of VGs
Dbvg <- Databases
Logvg<-Logs
Instvg <-Instance
Bkvg<- DB Backup
Stgvg <- Disk storage
With your current vg setup you are dedicating one or more luns to each vg.
The good is dedicated resources of that lun (iops+capacity) in each vg.
But the converse is also true, you _only_ have the dedicated resources of that
lun in the vg.
If you max out the resources of a vg and others are
He claims there is a queuing issue with too many at the HBA. I guess I missed
that the last 12 years of being a storage/TSM admin.
I told him the theory of using many was to allow more concurrency. Before we
build I just want make sure this is not a mistake that cannot be easily fixed.
Thanks,
VGs are cheap. Why does your AIX admin want to reduce the number of VGs?
David Ehresman
-Original Message-
From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of
Huebner, Andy
Sent: Wednesday, July 15, 2015 9:03 AM
To: ADSM-L@VM.MARIST.EDU
Subject: [ADSM-L] Disk layout
