A few days ago in the "IPLing from tape" thread, I had a brief interaction
with John McKown about the Flash Express with respect to his reference to
"SSD." Some additional research revealed to me that we are both correct.
:-)
Flash Express is indeed implemented with a RAID 10 SSD array, but the
array is expressed to the host as Storage Class Memory, not as an I/O
device. The new Extended Asynchronous Data Move (EADM) facility
introduced in the zEC12 handles this. So while it *is* SSD, it's not
usable *as* SSD.
For more information, see Appendix C of the IBM zEnterprise EC12 Technical
Guide.
Regards,
Alan
Senior Managing z/VM and Linux Consultant
IBM System Lab Services and Training
ibm.com/systems/services/labservices
office: 607.429.3323
[email protected]
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