Re: Single-System Independent Auxiliary Storage Pools

[Charles Wilt <charles.wilt@xxxxxxxxx>]

3 is the biggie IMHO...

iASP allows the IBM i to have multiple DBs....

Lets you have Dev/QA/Prod on a single box with the exact same set of
libraries.

Charles

On Wed, Dec 6, 2017 at 1:41 PM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

> I've been reading about IASPs at:
>
> https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/
> rzaly/rzalypdf.pdf?view=kc
>
> Along with reading archived discussions.
>
> IASPs are fundamental component of PowerHA and Geographic Mirroring. But
> what about using them alone on a single system? Are there pros and cons?
>
> The biggest con appears to be that they require a disk drive (2 for
> mirrored protection), for each IASP. A case could be made to enhance IBM i
> to support small internal virtual disks.
>
> A number of use cases come to mind.
>
> 1. Reduce IPL time by separating application IASPs from SYSBAS.
> 2. Reduce SAVSYS time by separating application IASPs from SYSBAS.
> 3. Host multiple versions of applications by dividing them between IASPs.
> 4. Host an open-source project and external developers on an IASP (easy to
> secure).
> 5. Use an IASP version of your application to create an installation
> package.
>
> Can you think of IASP pros and cons, compared to separate libraries and
> directories, or compared to LPARs?
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