HP 3000 99x Family, Installation Manual

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Appendix B B-3
Configuring the HP-PB Card Cage
Planning the HP-PB Configuration
Boot disk - system performance may be enhanced by separating system software and user data on
separate disk arrays.
NOTE
HP recommends against putting printers on the same HP-IB card with a
system disk. This configuration has been reported to cause some data
corruption on the system disk.
Power and Space Budgeting for the HP-PB Card Cage
Because of power and space constraints, there are limits on the number and type of HP-PB
cards supported by an HP-PB cardcage. These limits apply both to an internal HP-PB
cardcage in the SPU cabinet, and to an external HP-PB cardcage in an expansion cabinet.
The HP-PB cards in an HP-PB cardcage must:
■
Not require more than 14 single-high slots. (One double-high card = two single high
cards.)
■
Not exceed the power available at each voltage:
❏
71.64W at +12V.
❏
161.58W at +5V.
❏
23.64W at
−
12V.
■
Not exceed the total power available (222.82W).
Power Budgeting Worksheets
To see whether a configuration of HP-PB cards is supported, use the worksheets on the
following pages:
■
For the 99x, use Table B-3.
■
For T-Class, use Table B-4.
1. A maximum of 5 connections for SCSI and a maximum of 5 connections for HP-FL
(PB-FL). Remaining slots can be used for other non-disk activity as long as power
limits are not violated. This limit applies to single disks as well as disk arrays.
2. First 802.3 LANIC standard in LAN/Console card.
802.5 Token
Ring single-high N/A N/A 1
LAN/Console double-high N/A N/A 1
PSI single-high N/A N/A 8
I/O Card Slot Height
Maximum I/O
Cards per
HP-PB Card
Cage
Maximum
Devices per I/O
Card
Maximum I/O Cards per
System