Proware EP-2243D-F4S3, User Manual

Page: 116 / 138

Fibre to SAS/SATA II RAID Subsystem
116 User Manual
Case 2: One Volume Set Mapped to Channel 0&1 LUN 0
When one Volume Set is created and mapped to Channel 0&1 LUN 0 ,
the Volume Set is Active in Controller 1 Ports 0 and 1 (Host A and Host
B channels), and Standby in Controller 2 .
In this case, Ports 0 and 1 in Controller 1 will be both active and use Load
Balance mode.
Volume Channel/LUN Mapping Remarks
Volume Set #000 0&1 / 0
Channel 0&1 => Ports 0 and 1 /
LUN 0 => Controller 1
IMPORTANT: MPIO must be configured on the host system(s), in
order for redundant LUNs (two paths via Controller 1 and 2) to
appear as single LUNs.
Case 3: Two Volume Sets each Mapped to Channel 0
When a Volume Set is created and mapped to Channel 0 LUN 0 , the
Volume Set is Active in Controller 1 Port 0 (Host A channel), and
Standby in Controller 2 .
When a second Volume Set is created and mapped to Channel 0 LUN 1 ,
the Volume Set is Active in Controller 2 Port 0 (Host A channel), and
Standby in Controller 1 .
Volume Channel/LUN Mapping Remarks
Volume Set #000 0 / 0
Channel 0 => Port 0 /
LUN 0 => Controller 1
Volume Set #001 0 / 1
Channel 0 => Port 0 /
LUN 1 => Controller 2
NOTE: All even number LUNs assigned to Volume Sets will be Active in
Controller 1 and all odd number LUNs assigned to Volume Sets
will be Active in Controller 2.
IMPORTANT: MPIO must be configured on the host system(s), in
order for redundant LUNs (two paths via Controller 1 and 2) to
appear as single LUNs.