At the risk of being pedantic - one more thing -
An iASP is an ASP - an Auxiliary Storage Pool. A collection of disk arms under a name or number.
That's the starting point - just to be clear on a bright, sunny day!!
Unlike standard ASPs, which have characteristics like overflowing into the main ASP when full, IASPs are limited - when you run out of room, you run out of room. Also, IASPs are almost like a partition - when you vary on the ASP device, you get a lot of the IPL stuff, like the system database catalog.
This last bit is another of the benefits of IASPs - you can speed up an IPL when you don't vary on an IASP at IPL but put it off for a bit. Then you are up and running sooner.
Cheers
Vern
----- Original Message -----
Here is how the system "sees" and iASP:
Work with Configuration Status S02
06/13/13 10:49:17
Position to . . . . . Starting characters
Type options, press Enter.
1=Vary on 2=Vary off 5=Work with job 8=Work with description
9=Display mode status 13=Work with APPN status...
Opt Description Status -------------Job--------------
IASP1 AVAILABLE
Work with Device Descriptions
System: S02
Position to . . . . . Starting characters
Type options, press Enter.
2=Change 3=Copy 4=Delete 5=Display 6=Print 7=Rename
8=Work with status 9=Retrieve source
Opt Device Type Text
IASP1 *ASP
Display Device Description S02
06/13/13 10:50:41
Device description . . . . . . . . : DEVD IASP1
Option . . . . . . . . . . . . . . : OPTION *BASIC
Category of device . . . . . . . . : *ASP
Resource name . . . . . . . . . . : RSRCNAME IASP1
Relational database . . . . . . . : RDB IASP1
Message queue . . . . . . . . . . : MSGQ QSYSOPR
Library . . . . . . . . . . . . : QSYS
Current message queue . . . . . . : QSYSOPR
Library . . . . . . . . . . . . : QSYS
Last activity date . . . . . . . . : 05/26/13
Allocated to:
Job name . . . . . . . . . . . . . : *NONE
User . . . . . . . . . . . . . . :
Number . . . . . . . . . . . . . :
From the IFS point of view:
Work with Object Links
Directory . . . . : /dev/IASP1
Type options, press Enter.
2=Edit 3=Copy 4=Remove 5=Display 7=Rename 8=Display attributes
11=Change current directory ...
Opt Object link Type Attribute Text
. DIR
.. DIR
QDEFAULT.UDFS BLKSF
Work with Object Links
Directory . . . . : /IASP1
Type options, press Enter.
2=Edit 3=Copy 4=Remove 5=Display 7=Rename 8=Display attributes
11=Change current directory ...
Opt Object link Type Attribute Text
QSYS.LIB DIR
STCIS DIR
STNGO DIR
TAAVTP DIR
WMIS DIR
WWWDEV DIR
This is an example of what happens when you vary on an iASP ... It is very much like a mini-ipl...
Display ASP Vary Status
ASP Device . . . . : IASP1 Step . . . . . . . : / 34
ASP Number . . . . : 33 Current time . . . : 00:06:04
ASP State . . . . : AVAILABLE Previous time . . : 00:06:04
Step Elapsed time
UID/GID mismatch correction 00:00:00
Database access path recovery 00:00:03
Database cross-reference file merge 00:02:43
SPOOL initialization 00:00:00
Image catalog synchronization 00:00:00
Command analyzer recovery 00:00:08
Catalog validation 00:00:00
And when you vary it off... (Note: In this example, this iASP is Varied On right now because HA mirroring is active)
Display ASP Vary Status
ASP Device . . . . : IASP1 Step . . . . . . . : / 5
ASP Number . . . . : 33 Current time . . . : 00:01:39
ASP State . . . . : VARIED ON Previous time . . : 00:01:39
Step Elapsed time
Cluster vary job submission
Ending jobs using the ASP 00:00:00
Waiting for jobs to end 00:00:05
Image catalog synchronization
Writing changes to disk 00:01:33
Reply or Forwarded mail from: Kenneth E Graap
midrange.com
