Target And Lun Mapping Example; Target-Only Mapping Example - HP StorageWorks SR2122 User Manual

Table 5: Target and LUN Mapping Example
Apparent to
Host
Local Disk (D:) Database
Apparent as one Database
locally attached appears as one
storage device controller with one
LUN available
With target-only mapping, an iSCSI target name is specified and mapped to the
physical storage address of a storage controller only; a WWPN. Any LUNs that
are available in the storage controller are made available as iSCSI LUNs and are
numbered the same as the LUNs in the storage controller. For example, if an
iSCSI target specified as Webserver2000 were mapped to the physical storage
address WWPN 3100112233445577, and LUNs 0 through 2 were available in that
controller, those LUNs would become available as three iSCSI LUNs. An iSCSI
driver would see the iSCSI target named Webserver2000 as a controller with three
iSCSI LUNs identified as LUN 0, LUN 1, and LUN 2. Each iSCSI LUN would
appear as a separate storage device to a host.
Table 6: Target-only Mapping Example
Apparent to
Host
Local Disk (D:) Webserver2000
Local Disk (E:) Webserver2000
Local Disk (F:) Webserver2000
Apparent as Webserver2000
three locally appears as one
attached storage controller with one
devices LUNs 0, 1, and 2
available
IP Storage Router SR2122-2 User Guide
iSCSI Target iSCSI LUN Available
LUN 9
iSCSI LUN is
numbered as specified
and can be different
than the physical LUN
number
iSCSI Target
LUN 0
LUN 1
LUN 2
iSCSI LUNs are
numbered the
same as
physical LUNs
iSCSI LUN Physical Storage
Available
WWPN
3100112233445577
WWPN
3100112233445577
WWPN
3100112233445577
Specifies the storage
address of the storage
controller
Software Overview
Physical
Storage Physical LUN
Address Available
WWPN LUN 12
31001122334
45566
Specifies the The LUN
storage address number is
of the storage specified as the
controller only LUN to be
mapped
Physical LUN
Address
LUN 0
LUN 1
LUN 2
LUNs 0, 1,
and 2 are
available for
mapping
Available
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