Chapter 10. Copy services 639
Number of HyperSwap volumes supported per IBM Storwize V5000 system (for V5030) is
1024. Additional FlashCopy requirements can reduce the number of possible HyperSwap
volumes. For more information, see V8.1.0 Configuration Limits and Restrictions for IBM
Storwize V5000 at this website:
https://ibm.biz/BdjSJx
Hosts that access a HyperSwap volume through Internet Small Computer System
Interface (iSCSI) or serial-attached SCSI (SAS) cannot take advantage of the high
availability function.
FlashCopy usage can be complicated because the Metro Mirror source volume and target
volume can switch during daily operation. Because of this possibility, the identification of
the copy direction is required for a successful FlashCopy.
The Remote Copy relationship must be removed first for a reverse FlashCopy operation.
After a reverse FlashCopy, all HyperSwap functions must be implemented manually again
(Remote Mirror + FlashCopy relationships).
IBM FlashCopy Manager is not supported by HyperSwap volumes.
For more HyperSwap information, see IBM Storwize V7000, Spectrum Virtualize,
HyperSwap, and VMware Implementation, SG24-8317:
https://ibm.biz/BdrwBG