Re: i hosting i question

[DrFranken <midrange@xxxxxxxxxxxx>]

We had multiple customers do the same, strip VIO and replace with IBM i 
for internal hosting and for the same primary reason but other reasons 
as well.

Do be aware that this performance issue was very true 'some time ago' 
but had been corrected. The actual issue was the way that VIO handled 
RAID sets on large cache cards such as the FC #5913 and friends. The 
problem caused excessive I/O from VIO to disk (double if I recall 
correctly) and you can readily see that being a performance issue. 
Eventually IBM released fixes for VIO to correct that.

That said I need to see a pretty definitive reason for VIO over IBM i 
for hosting on internal disk.

        - Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 11/27/2017 8:40 AM, Rob Berendt wrote:
> Been out for a few days and catching up...
>
> We started out hosting disk on vios to IBM i.  For internal disk this was
> a crushing performance killer.  We initialized the whole darn system and
> started over.  That was back on Power 6 days though.
>
> We recently replaced all of our SSD's due to the old SSD's getting cost
> prohibitive to maintain.  We at least wanted a bulk of the data on
> maintenance.  We kept the old SSD's in a new ASP as self maintained disk
> (multiple hotspares).
> At that time we were also looking at replacing our HA solution.  So we
> looked at SAN.  We determined that it was cost prohibitive for us.
>
>
> Rob Berendt