Hitachi TrueCopy for z/OS (T1711-96009, June 2006)

50 TrueCopy for the XP1024/XP128/XP12000/XP10000
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 modes are enabled. See Table 4
on page 20.
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 52. 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
XP1024/XP128/XP12000/XP10000s, such as TC390, TC390A, CA Sync, and CA 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 54.
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
use single-mode longwave optical fibre cables, fibre cables up to 30 km in length and up to two switches
are required for distances greater than 10 km. TC390 operations can be performed at distances of up to
30 km (18.6 miles) using standard single-mode longwave support. Long-distance solutions are provided
using approved channel extenders and communication lines.
Figure 6 Fibre Channel remote copy connection configurations