E24254-01
Chapter 1 Introduction 13
Introduction
Load Sharing DC Power Supplies
The SL8500 has
three
DC power grids that supplies 48 VDC to components
throughout the library:
•
The tape drive power grid supports up to 64 tape drives.
•
The robot power grid powers the HandBots and the pass-thru ports.
•
The front frame power grid supplies 48 VDC power to the cartridge access
ports, elevators, turntables, and the service safety door.
Table 6. Load Sharing Power Supplies
Power Supply Type
Quantity
Configuration
1
N+1
2N
16
2 + 1 = 3
2 + 2 = 4
24
3 + 1 = 4
3 + 3 = 6
32
4 + 1 = 5
4 + 4 = 8
40
5 + 1 = 6
5 + 5 = 10
48
6 + 1 = 7
6 + 6 = 12
56
7 + 1 = 8
7 + 7 = 14
64
8 + 1 = 9
8+ 8 = 16
8 tape drives
4 tape drives
4
2 + 1 = 3
2 + 2 = 4
8
4 + 1 = 5
4 + 4 = 8
2 HandBots
1 HandBot
1 + 1 = 2
1 + 1 = 2
1 + 1 = 2
2 + 2 = 4
The DC power grids use
load sharing power supplies
. Load sharing allows the
output voltage of one supply to be monitored and adjusted by other supplies
on the bus.
In effect, each independent output voltage is adjusted so that all of the
independent output voltages are the same to evenly distribute the load so if
one output fails or is shorted, it will not bring down the bus.
Table 6
explains the quantity of load sharing power supplies required for each
power configuration and the number of components they power.
Tape drives—from one to:
This allows one supply for every:
Robotics
This allows one supply for every:
Front frame components
Electronics control module
2
1
Requires the 2N power configuration and matching DC power feature codes.
2
The electronic control module (ECM) power supplies are AC to DC converters and
different from the load sharing power supplies used by the HandBots and tape drives.
Содержание StorageTek StreamLine SL8500
Страница 4: ...Summary of Changes iv SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 12: ...Contents xii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 18: ...Tables xviii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 76: ...Introduction 56 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 97: ...E24254 01 Chapter 3 Site Survey Forms 77 Site Survey Forms Figure 21 Content Management Plan ...
Страница 98: ...Site Survey Forms 78 SL8500 Systems Assurance Guide July 2011 E24254 01 Figure 21 Content Management Plan ...
Страница 137: ...E24254 01 Chapter 4 Site Preparation 117 Site Preparation ...
Страница 138: ...Site Preparation 118 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 163: ...E24254 01 Appendix A Content Management 141 Content Management Figure 47 Content Management Work Sheets ...
Страница 164: ...Content Management 142 SL8500 Systems Assurance Guide July 2011 E24254 01 Figure 47 Content Management Work Sheets ...
Страница 198: ...Electrical Conversions 176 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 206: ...Comparisons 184 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 233: ...E24254 01 Appendix H Partitioning 211 Partitioning Make copies as necessary ...
Страница 240: ...Partitioning 218 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 251: ...E24254 01 Appendix J Work Sheets 229 Work Sheets Figure 73 Content Management Work Sheet ...
Страница 276: ...Index 254 SL8500 Systems Assurance Guide June 2011 E24254 01 ...
Страница 277: ......
Страница 278: ...Oracle Corporation Worldwide Headquarters 500 Oracle Parkway Redwood Shores CA 94065 U S A ...