Note on adding or removing cache or shared memory – HP StorageWorks XP Remote Web Console Software User Manual
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Figure 16 Fibre Channel Interface Extender Connection
* To set ports, use LUN Manager and set port topology to:
NL port: Fab on, FC-AL
N port: Fab on, Point-to-Point
Note on adding or removing cache or shared memory
When pair status of TCz (synchronous/asynchronous) is pending, neither cache nor shared memory
can be added to or removed from the storage system. When either of these tasks is to be performed,
first split any pairs in pending status, then resynchronize when the cache or shared memory
operation is completed.
Channel Extenders for Serial Remote Copy Connections
TrueCopy for Mainframe Asynchronous can be integrated with third-party channel extender products
to provide remote data backup for distances greater than 43 km. The following information was
current at the time of publication of this document, but may change. Please contact your HP service
representative for the latest information on channel extender support for TrueCopy for Mainframe.
For Fibre Channel interface connections, you can use the switches as for ordinary switch connections,
and no special settings are required for the XP disk array.
•
TrueCopy for Mainframe has been tested with the CNT UltraNet Storage Director:
UltraNet supports T3 and ATM (asynchronous transfer mode) communication lines.
◦
◦
UltraNet supports ATM OC-3 (optical carrier) levels. The transfer speed of OC-3 is a
maximum of 155 Mb/s.
◦
The transfer speed of T3 is a maximum of 44 Mb/s.
•
The XP disk array's serial numbers must be set on the channel extenders as follows. If the serial
numbers are not set correctly, the TrueCopy for Mainframe add pair operation will terminate
with an error. For CNT UltraNet, this operation must be coordinated with the HP representative
and performed by the CNT representative.
◦
Set the RCU serial number to the MCU-side extender.
◦
Set the MCU serial number to the RCU-side extender.
◦
Set the serial number on each CNT UltraNet port.
•
Make sure that your channel extenders are capable of supporting the TrueCopy for Mainframe
Asynchronous channel command. The parameter length and detailed specification of the
TrueCopy for Mainframe Asynchronous channel command are different than for TrueCopy
for Mainframe Synchronous RIOs.
•
The LDEV IDs of the R-VOLs must be assigned on each port of the MCU-side extender. The
maximum number of LDEVs which can be assigned on each port is 254.
LDEV IDs to the Channel Extender Ports” (page 74)
shows the required LDEV assignment on
each extender port. If the LDEV IDs are not assigned properly, the TrueCopy for Mainframe
add pair operation will terminate with an error. For CNT UltraNet, this operation must also
be performed by the CNT representative.
Installing the Hardware
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