HP StorageWorks XP Remote Web Console Software - Manual (Page 49)

Hitachi TrueCopy for z/OS user guide 49
Installing the TrueCopy hardware
Initial installation of the TC390 hardware is planned and performed by the user and the HP representative.
To install the hardware required for TC390 operations:
1. User: Identify the TC390 M-VOLs and R-VOLs (main and remote volumes) so that the TC390 hardware
can be installed and configured properly.
2. User: On the host operating system, verify that the missing interrupt handler (MIH) value (also called
host I/O patrol time) is set high enough to accommodate the number of volume pairs, the cable length
between the MCUs and RCUs, and the initial copy pace. The recommended MIH value for TC390
operations is 60 seconds. For MVS, the MIH value is specified in the SYS1.PARMLIB file.
NOTE: The recommended MIH value for HXRC is different than for TC390. If you are performing
TC390 and HXRC on the same XP12000/XP10000 (or other XP disk arrays) at the same time,
contact your HP account support representative for assistance.
3. User and HP Representative: Install the XP Command View Advanced Edition Software server near the
TC390 MCU(s) and connect the XP Command View Advanced Edition Software server to the TC390
MCU(s) through the LAN. HP recommends that you also install a XP Command View Advanced Edition
Software server connected to the RCUs at the remote site.
4. HP Representative: Enable TC390 on all MCUs and RCUs. Verify that the cache, NVS, and DFW of the
MCUs and RCUs are properly configured for TC390 operations. See ” Cache, NVS, and DASD Fast
Write ” on page 48. If the user plans to perform TC390A and/or HXRC operations in the same disk
array, make sure to install adequate cache to handle the increased sidefile usage. When determining
the required amount of cache, you must also consider the amount of Cache LUN XP data to be stored
in cache.
5. HP Representative: Verify that the necessary SVP system option modes are enabled. See Table 3 on
page 18.
6. HP Representative: Verify the MCUs are configured to report sense information to the host(s). The RCUs
should also be attached to a host processor to enable reporting of sense information in case of a
problem with an R-VOL or RCU. If the remote site is unattended, the RCUs should be attached to a host
processor at the main site so that the system administrator can monitor the operational condition of the
RCUs.
7. HP Representative: For serial interface connections, install the serial port adapter features. For example,
the DKC-F410I-8S serial 8-port adapter (pair of 4-port CHE cards, 1 card per cluster) provides eight
ESCON links. If the MCU and RCU are multiplatform disk arrays, there may be available serial
interfaces and additional serial port adapter features may not be required. For Fibre Channel interface
connections, install the Fibre Channel adapter features (CHF P/K (WP411-B).
8. HP Representative: If the user plans to use the Local TC390A timer type option, set the SVP clock to
local time so that the TC390A timestamps will be correct.
9. HP Representative: Install the TC390 remote copy connections between the MCU(s) and RCU(s). This
hardware (optical fibre cables, switches, and so forth) is supplied by the user. For remote copy
configurations, see ” Serial remote copy connections ” on page 51. Distribute the paths between
different storage clusters and ESCDs or switches to provide maximum flexibility and availability. The
logical paths between the MCU and RCU must be separate from the logical paths between the host
and RCU. For serial interface connections, all remote copy activities between two XP12000/XP10000s,
such as TC390, TC390A, XP Continuous Access Sync, and XP Continuous Access Async, can share the
same remote copy connections. For Fibre Channel interface connections, only TC390 activities (Sync
and Async) can share the same fibre remote copy connections (future support will eliminate this
restriction). For information on using channel extenders, see ” Channel extenders for serial remote copy
connections ” on page 53.
Fibre remote copy connections
The following figure shows the remote copy connection configurations for Fibre Channel interface TC390
operations. The MCU and RCU of each TC390 pair must be connected through multimode shortwave or
single-mode longwave optical fibre cables. If you use multimode shortwave optical fibre cables, fibre
cables up to 1.5 km in length and up to two switches are required for distances greater than 0.5 km. If you