Ac Power Cables; Dem Tape Drive Watts Consumption Example; Dc Supplies Required For Base Example; Dc Supplies Required For Drive Expansion Module - Example - Oracle StorageTek SL3000 System Assurance Manual

AC Power Cables

The drives in the Base module use 1,546 W. In
maximum 843 W supported by a 120 VAC PDU. Therefore, the Base module requires a
240 VAC PDU to support the drive configuration, so refer to
Table 5–7
Drive Type
T10000C
T9840D
LTO5
The drives in the DEM use 756 W. In
VAC PDU can support 756 W. However, you cannot mix 120 VAC with 240 VAC PDUs
within the library. Therefore, the example library requires 240 VAC PDUs.
Two tape drive DC power supplies ship standard with the Base module and two
power supplies ship standard with the DEM. Therefore, subtract two from the DC
supplies required. Use
The tables below list the power supplies required for the example library.
Table 5–8
Configuration Option
N+1 (240 VAC PDU)
2N (240 VAC PDU)
2N+1 (240 VAC PDU)
Table 5–9
Configuration Option
N+1 (240VAC PDU)
2N (240VAC PDU)
2N+1 (240VAC PDU)
The number of drive DC supplies that must be ordered depends on the power
configuration selected. For instance, if the example library had a 2N+1 configuration, it
would require an order of six additional drive DC power supplies (four supplies for
the Base module and two supplies for the DEM). The 2N+1 also requires an additional
DC supply for the robotics and an additional ECM 200W cPCI power supply. The ECM
power supply is different than the tape drive and robot power supplies listed in this
example. For ordering information, see
AC Power Cables
The following table lists the cables required for each power configuration. You must
order one power cord per PDU installed:
For N+1 order one power cord for the Base module and an additional power cord
■
for the DEM (if installed)
5-6 StorageTek SL3000 Systems Assurance Guide

DEM Tape Drive Watts Consumption Example

Quantity of Drives
4
2
4
Table 5–4 and

DC Supplies Required for Base Example

DC Supplies
Required
3
4
6

DC Supplies Required for Drive Expansion Module - Example

DC Supplies
Required
2
2
4
Table 5–2, 1,546 W exceeds the
Table
Multiply by Watts
Per Drive
93
100
46
Table 5–3 and Table 5–5, either a 120 VAC or 240
Table 5–5 to determine what to order.
DC Supplies to Order
(= Required - 2)
1
2
4
DC Supplies to Order
(= Required - 2)
0
0
2
"DC Power Supplies"
5–4.
Total Watts Per
Drive Type
372
200
184
on page 9-9.