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

["Larry \"DrFranken\" Bolhuis" <midrange@xxxxxxxxxxxx>]

Have to agree with Steve that it's largely personal preference.

The cost savings can be important, but with Power10 and the limited 
number of PCIe slots, more will move to SAN Boot. You can't afford to 
dedicate a slot to booting just VIOS from internal disk on single socket 
Power10 machines.

Another thing I like about SAN Boot, though, is the ability to flash 
copy the VIOS boot disk to make the second VIO server, (two birds, one 
stone etc.)  But additionally when you are going to upgrade VIOS, flash 
copy first so you have a simple and FAST go-back if needed.

Certainly the space needed for VIOS has zero impact on SAN sizing so not 
a factor there.

	- DrF

On 8/22/2022 7:40 AM, Rob Berendt 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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