User`s guide

A
StorageWorks Product Specifications
This appendix chapter describes the physical and environmental specifications for
the StorageWorks products. See the Digital Systems and Options Catalog for the
operating specifications for storage devices, controllers, and host computers.
A.1 Input Power Requirements
The input power requirements for a StorageWorks enclosure are determined by
the number of shelves, the enclosure power distribution units, the fans, and other
features.
A.2 Power Units
Each StorageWorks shelf requires an ac or dc power unit. The power unit type is
determined by the enclosure power system, either ac or –48 V dc.
All shelves can have a redundant power unit to ensure that a power unit
failure does not disable the shelf. In most cases, battery backup units (BBUs)
can be combined with the shelf power unit to provide extended system data
integrity. See the following table and StorageWorks Family User’s Guide for more
information about the power units.
Table A-4 contains the specifications for the BA35X–HA, the BA35X–HB, and the
BA35X–HC StorageWorks power units.
Table A–1 StorageWorks Power Units
Specifications BA35X–HA BA35X–HB BA35X–HC
Power unit type AC input DC input Battery backup
Input voltage range 90–264 V ac 36–72 V dc N/A
Nominal input voltage 110 V ac 48 V dc 12 V dc‡
Autoranging feature Yes Yes No
Output voltages 12 V dc
5Vdc
12 V dc
5Vdc
12 V dc
5Vdc
Output power† 131 W 131 W 200 W peak power for
16, 32, or 64 seconds
† Sequential device spin-up at 4-second interval mandatory.
‡ Charging voltage.
StorageWorks Product Specifications A–1