Sun Microsystems StorageTek StreamLine SL8500, System Assurance Manual

Page: 148 / 278

Ordering Information
126 SL8500: Systems Assurance Guide • July 2011 E24254-01
Tape Drive Power Supplies
See “Tape Drives” on page 129 for information about specific drives.
Location and selection of the power supplies depends on the number of tape
drives selected and the type of power configuration (N+1 or 2N). Each pair of
supplies provides enough power to support up to 16 tape drives regardless of
the type of drive.
• The N+1 power configuration provides two load sharing power supplies for
every 16 drives with one redundant power supply.
• The 2N power configuration provides one load sharing power supply for
every four tape drives.
Note: The power supplies are hot-pluggable and can be added to the library
without any down time.
Power supply guidelines: (See Table 68 Load Sharing Power supplies)
• Drive power 1–16 drives standard

Order 3 power supplies (2+1 redundant)
• N+1 Drive Power 17–32 drives

Order 5 power supplies (4+1 redundant)
• N+1 Drive Power 33–48 drives

Order 7 power supplies (6+1 redundant)
• N+1 Drive Power 49–64 drives

Order 9 power supplies (8+1 redundant)
• 2N Drive Power 1–16 drives

Order 4 power supplies (2+2 redundant)
• 2N Drive Power 17–32 drives

Order 8 power supplies (4+4 redundant)
• 2N Drive Power 33–48 drives

Order 12 power supplies (6+6 redundant)
• 2N Drive Power 49–64 drives

Order 16 power supplies (8+8 redundant)
Note: The 2N drive power supplies require a 2N Power Configuration.

See Table 66 on page 123 .
Table 69. Tape Drive Power Supply Order Numbers
Order Number Description
XSL8500-DR-PWR-Z-N One Drive Power Supply