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Hitachi Command Control Interface (CCI) User and Reference Guide 297
Table 4.50 Registration for the Mirror Descriptor
Mirror Descriptor on Horcm.conf
TrueCopy ShadowImage
MU#0 MU#1 MU#2
Volumes on Horcm.conf
E none E none E none E none
Unknown
/dev/rdsk/c0t0d0
Unknown
E = Mirror descriptor volume to be registered in horcm.conf.
Unknown: Volumes that own host cannot recognize, even though volumes were registered in
horcm.conf.
CCI permits operation after “Permission command” at startup of HORCM. The target is
volume that was registered in the horcm.conf file.
“Permission command” is necessary to permit the protected volume at first. “Permission
command” compares an identification for volumes of horcm.conf to all of own host
volumes, and the result is registered within HORCM. And HORCM makes tables for
protected volume and permitted volumes from horcm.conf and Inquiry result. Inquiry
result is based on configuration of Hitachi Data Retention Utility. When the user controls
pair volumes, request to protected volumes is rejected with error code “EX_ENPERM”.
Protection Facility is based on host side view at the result of Hitachi SANtinel. You need
to configure SANtinel before CCI operation. CCI checks SANtinel by Inquiry within CCI.
Protection Facility is supported for Lightning 9900 storage systems and later (not for
7700E). For Hitachi 7700E you can protect the volumes by using Hitachi SANtinel.
Protection Facility can be enabled separately for each command device. If you want to
use protection and non-protection modes in the same storage system at the same time,
you can define two (or more) command devices: one with protection ON, one with
protection OFF. Protection mode is enabled for the host that has Hitachi SANtinel and
ON command device.
Permitted Volumes