Installation Procedure - HP Surestore Disk Array 12h - And FC60 Service Manual

Appendix D. Back-to-Back Racking

Installation Procedure

Installation Procedure
1. Confirm power requirements
Ensure that the installation site meets the following requirements.
Input voltage: 200/230/240 VAC single phase
Input frequency: 50 Hz/60 Hz
Input current: 16 A maximum, operating (per PDU)
US installations
Standard 20A Square D circuit breakers are adequate for all authorized configurations of back-to-back
racking.
European circuit breakers
In Europe, some sites may require upgraded circuit breakers. This is because inrush current for a single disk
enclosure may be has high as 57.16 amps peak for up to three milliseconds.
Note the figures in the following comparison chart:
Tripping
characteristic code multiplier
B
C
D
Z
K
In Europe, therefore, site preparation must include 16 amp circuit breakers, preferably with the D or K
tripping characteristic code.
CAUTION! Intermittent power losses will occur if improper circuit breakers are used.
242
Current Total trip current
6X 96A
12X 192A
25X 400A
4X 64A
17X 272A
Back-to-Back Rack usability
Do not use with BTBR
Up to 5 redundant disk enclosures
Up to 5 redundant disk enclosures or
up to 8 non-redundant disk
enclosures
Do not use with BTBR
Up to 5 redundant disk enclosures or
8 non-redundant disk enclosures