Introduction
10 SL8500: Systems Assurance Guide • July 2011
E24254-01
■
Power
The SL8500 library has two internal power configurations:
N+1 Power Configuration
The
N+1
power configuration provides a higher level of DC power redundancy
by adding an additional power supply to
each
DC power grid.
The
N+1
configuration contains
one
“system” power distribution unit (PDU)
and
one
N+1 power distribution unit.
•
The system PDU accommodates the main power cord and distributes AC
power from the customer’s branch circuit to the three DC power grids, the
electronics control module, and the N+1 PDU.
•
The N+1 PDU provides AC power to an extra 48 VDC load sharing power
supply on
each
of the three DC power grids plus an extra AC-to-DC
converter for the Electronics Control Module.
If a single power supply fails, there is still enough DC power available on
that power grid to keep the entire system operational until the power
supply can be replaced.
Note:
The N+1 power configuration provides only DC power redundancy.
Figure 5. N+1 Power Configuration
Redundant
Electronics
Summary of Contents for StorageTek StreamLine SL8500
Page 4: ...Summary of Changes iv SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 12: ...Contents xii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 18: ...Tables xviii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 76: ...Introduction 56 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 97: ...E24254 01 Chapter 3 Site Survey Forms 77 Site Survey Forms Figure 21 Content Management Plan ...
Page 137: ...E24254 01 Chapter 4 Site Preparation 117 Site Preparation ...
Page 138: ...Site Preparation 118 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 198: ...Electrical Conversions 176 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 206: ...Comparisons 184 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 233: ...E24254 01 Appendix H Partitioning 211 Partitioning Make copies as necessary ...
Page 240: ...Partitioning 218 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Page 251: ...E24254 01 Appendix J Work Sheets 229 Work Sheets Figure 73 Content Management Work Sheet ...
Page 276: ...Index 254 SL8500 Systems Assurance Guide June 2011 E24254 01 ...
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