Thanks everyone, I have a better understanding of how it works now.
On Wed, Mar 2, 2011 at 4:28 PM, Eric R Farman wrote:
> Tom,
>
> As Rick states, it depends on both software and hardware. From our side,
> z/VM's EDEVice support is entirely multipath capable. An EDEVice created
> and brought
Tom,
As Rick states, it depends on both software and hardware. From our side,
z/VM's EDEVice support is entirely multipath capable. An EDEVice created
and brought online with a single path can be modified via command to have
multiple paths. Those new paths will immediately be usable for I/O
Tom --
What I read from what you posted is that the storage side must be
servicing all paths. That's a legit requirement.
There is then the question of what VM does with those four paths.
Does it perform some kind of rotation, spreading the I/O load? Or do
the other paths serve only for fail-ov
Someone posed this question to me recently and after reading everything I
can find I have become confused.
I thought I'd through it out here and see if anyone has a good answer.
This is to support z/LINUX guests.
edevice 0200 type fba attr scsi fcp_dev F610,
wwpn 50060E80058D2110 lu
