IBM System Storage TS3500, Introduction And Planning Manual

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Power and cooling specifications for Models L23, D23, L53,
and D53
This section gives an overview of the power and cooling requirements of Models
L23, D23, L53, and D53 of the TS3500 Tape Library.
For Models L23, D23, L53, and D53, each base frame and expansion frame that
contains drives has its own enhanced frame control assembly. The enhanced frame
control assembly receives single-phase power (200-240 V ac only) from two
customer-supplied outlets or optionally from an adjacent powered frame when
using feature codes 1950 and 9989. The enhanced frame control assembly then
provides dc power to all tape drives within the frame as well as to the accessor.
Like the frame control assembly, the enhanced frame control assembly and tape
drives have their own cooling, but require free airflow.
Note: In order to ensure free airflow, do not stack cartridges, books, or other
materials on top of the library.
For redundancy, the enhanced frame control assembly contains two dc power
supplies, each with its own ac line cord. Under normal conditions, the tape drives
and the accessor draw power from both of the power supplies. However, in the
event of a failed power supply or loss of ac power on either line cord, each power
supply is capable of providing all power needs so that library operation is not
disrupted. The enhanced frame control assembly is required in expansion frames
that contain tape drives and the 4 I/O door option (feature code 1656).
For libraries that include a second accessor and the high-availability Model HA1,
at least one D23 or D53 frame (not a service bay) must be equipped with an
enhanced frame control assembly (feature code 1451).
The backend 4 Gb and 8 Gb Fibre Channel switches (FC 4872, 4873, 4875, or 4877)
are only supported on models L23 and D23. Each L23 and D23 frame with one of
these features installed must also install FC 1950 (power distribution unit), which
provides the additional connections that are required for powering the backend
switches as well as the enhanced frame control assembly. FC 1950 may also be
installed in L23, D23, L53 and D53 frames to power adjacent frames and reduce the
number of customer-supplied outlets that are required to power the library. Refer
to “Powering adjacent frames” on page 130 for more information.
When ordering FC 1950 for a frame, customers must also order one of the line cord
features (FC 9954, 9955, 9956, 9957, 9958, 9959, 9966) that are specifically for use
only with FC 1950. Each 995x or 9966 line cord feature supplies two line cords for
connection to two customer-supplied ac outlets. Refer to the 995x and 9966 feature
descriptions for the specific outlet types.
Note: Frames with FC 1950 and 995x or 9966 line cords require two 30–32 A
customer-supplied outlets, which are different outlet types than the 15–20 A
customer-supplied outlets needed for frames without feature code 1950. Adding FC
1950 to an existing frame requires the customer to provide different outlets as part
of the installation.
Chapter 2. Physical planning specifications
119