Hitachi MK-96RD626-07 - Manual (Page 38)

2-18 About Universal Volume Manager Operations
Hitachi Universal Storage Platform V/VM Universal Volume Manager User’s Guide
External
Port B
Port
WWN B
Internal
Volume
External
Port A
Port
WWN A
External
Volume
External
Port C
Port
WWN C
External
Port B
Port
WWN B
Internal
Volume
External
Port A
Port
WWN A
External
Volume
External
Port C
Port
WWN C
Error
Path
Priority 1
Status: Normal
Path
Priority 1
Status: Blockade
Path
Priority 2
Status: Standby
Path
Priority 3
Status:Standby
Path
Priority 3
Status: Standby
Path
Priority 2
Status: Normal
: I/O
External Storage System
Legend
: Internal volume where the external volume is mapped
Local Storage System
External Storage System Local Storage System
Figure 2-9 Single Mode with Alternate Paths in Standby only