Tape Drive Power Supplies; Calculating Tape Drive Power Supply Quantities; Watt Consumption Per Drive; Power Supplies Required For 120 Vac Pdus - Oracle StorageTek SL3000 System Assurance Manual

Calculating Tape Drive Power Supply Quantities

Tape Drive Power Supplies

The tape drives use load sharing 1200 W DC power supplies. Up to four tape drive
power supplies are located to the left of each PDU in both the Base module and the
DEM — see
The library ships with two tape drive DC power supplies per Base module and two
tape drive DC power supplies per DEM. The number of tape drive DC power supplies
required depends on the power configuration selected and the number and type of
tape drives in the library. To calculate the number of power supplies to order, see
"Calculating Tape Drive Power Supply Quantities"
Calculating Tape Drive Power Supply Quantities
The number of supplies required, depends on:
Power configuration (120 VAC or 240 VAC with N+1, 2N, or 2N+1)
■
Number and type of tape drive (T10000, T9840, or LTO)
■
To determine the number of power supplies required for a library configuration:
Determine the total number of each drive type.
1.
Multiply by the watts-per-drive for each drive type, see
2.
Drive".
Add together the watts used by each drive type to calculate the total watts
3.
consumed.
Use
4.
needed.
For ordering part numbers, see

Watt Consumption Per Drive

Table 5–1
Drive Type
T9840D
T10000A/B/C
T10000D
LTO

Power Supplies Required for 120 VAC PDUs

To use 120 VAC PDUs, the total watts used by the drives must be less than 843 W in
the Base module and less than 1,481 W in the DEM. If the total watts exceeds 843 W in
the Base module or 1,481 W in the DEM, 240 VAC PDUs are required. You cannot mix
120 VAC with 240 VAC PDUs within the library. All PDUs must be the same type.
Table 5–2
Total Watts Used
by All Drives
1 - 563
5-4 StorageTek SL3000 Systems Assurance Guide
Figure 5–1.
Table 5–2 through Table 5–5
"DC Power Supplies"

Watts Per Drive

Maximum Watts
Used by Each Drive
100
93
127
46

DC Power Supplies for Base (120 VAC PDU)

Power Supplies
Required for N+1
2
below.
Table 5–1, " Watts Per
to determine the number of DC power supplies
on page 9-9.
Power Supplies Power Supplies
Required for 2N Required for 2N+1
2 4