HUGE Change to the thinking here. HUGE.

Why?

Because now you are backing up guests and that requires one of:

A) Separate I/O card for each guest. (Fiber or SAS)
B) Switching the I/O card between partitions as they are backed up.
C) Using tape drives ONLY rather than Libraries for your backups as you can share drives through the host but not libraries.

With VIOS you could use Fiber and share a library between all partitions. Without VIOS AND Fiber your choices are above.

But these are very small partitions so you will never outrun a SAS connection to the VTL.

- Larry "DrFranken" Bolhuis

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

On 1/29/2020 1:39 PM, Kevin Monceaux wrote:
Midrange Fans,

On Wed, Jan 29, 2020 at 12:31:07PM -0600, Kevin Monceaux wrote:

Our internal DASD is connected to two 57D8 8GB SAS RAID controllers.

I probably should have added that we have i hosting i, no VIOS. Our host
LPAR has 18 arms, 17 active and one hot spare. Most backups run on the
guests. Two guests have eight virtual arms each and the smaller guest has
five.



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