This appendix discusses resiliency improvements supported on the IBM DS8870 with DS8000 Licensed Machine Code (LMC) 7.7.10.xx.xx or later.
The resiliency improvements include the following features:
•Small Computer System Interface (SCSI) reserves detection and removal
•Querying count key data (CKD) path groups
•IBM z/OS Soft Fence
B.1 SCSI reserves detection and removal
Assume that two hosts would share the same disk or logical unit number (LUN). Obviously, there is the potential issue that both hosts would ...