Re: With SAN should you still use internal disk for vios?

[Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>]

My take on that is it's personal preference.  I prefer SAN boot VIOS, but
that makes the initial installation and build a bit more difficult, then
again it's easy to replicate those LUNs to the DR box.  The other down side
is if there is a failure you must have the SAN and fibre network all up and
running before you can start the POWER system.  Some might not find that as
useful as it could be.

With internal storage for VIOS you have the additional cost of the DASD
controller which by definition must split the backplane and of course the
storage.  On the up side it's easier to install etc.

In the end does it matter, not really.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On Mon, Aug 22, 2022 at 6:40 AM Rob Berendt <rob@xxxxxxxxx> wrote:

> IDK if I already asked this question but:  With SAN should you still use
> internal disk for vios?
>
> The winds of change are coming.  When replacing our 9009-42A and our
> 8286-41A (same rack) we may go with SAN.
>
> BP is pushing for internal disk to continue to host VIOS.  With all the
> nightmares I had getting disk replaced for VIOS I find this rather
> disconcerting.  Why would I get this recommendation?
>
> DSPASPBRM
> 9009
> --Auxiliary storage pools--   Over-       -----  ASP Media  -----
> Name      Number   Type       flow Mirror   Size    Avail   %Used
> *SYSTEM    00001 *SYSBAS       No   No     25605 G   4053 G 84.1
>
> 8286
> --Auxiliary storage pools--   Over-       -----  ASP Media  -----
> Name      Number   Type       flow Mirror   Size    Avail   %Used
> *SYSTEM    00001 *SYSBAS       No   No      5957 G   4202 G 29.4
> *NONE      00002 *SYSBAS       No   No      6919 G   1778 G 74.3
>
>
>
> Related thread from earlier this year:
> https://archive.midrange.com/midrange-l/202205/msg00262.html
>
>
> Rob Berendt
> --
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