Given that performance is very nearly the same between SAN and EDEV
connections, or acceptably so, then I would recommend that you go with
the EDEV approach. Just have your SAN folks carve out a big chunk of SAN
storage for your use, and then allocate EDEV (FBA type) disk storage for
guests as needed from that large pool. You want to minimize your
contacts with the SAN folks, I think.
Good luck.
Richard Troth wrote:
I should post this to the Linux list also, but I'll start with the VM list.
On a VM system hosting Linux guests,
I can think of one or two reasons why one might
want to use EDEV instead of direct SAN connections.
There are also some reasons why one would NOT want to.
Can any of you think of reasons you would go one way or the other?
Given a Linux guest on z/VM using SAN,
should it go direct or go via EDEV? If direct, why? If EDEV, why?
Thanks.
I hope to add a slide to my SHARE pitch on this topic.
-- R; <><
--
DJ
V/Soft
z/VM and mainframe Linux expertise, training,
consulting, and software development
www.vsoft-software.com
