NonStop S-Series System Expansion and Reduction Guide

Table Of Contents
Expanding a System Online
HP NonStop S-Series System Expansion and Reduction Guide522465-009
6-17
9. Power On Enclosure
9. Power On Enclosure
Power on this enclosure by plugging the AC power cords for the enclosure into the AC
power source.
All CRUs in the enclosure should start automatically. They might take several minutes
to run their power-on self-tests (POSTs). Verify that all CRUs are operating:
The amber LEDs on disk drives and on CRUs installed in slots 50 through 55 will
become lit briefly as these CRUs are brought up. However, if any of these amber
LEDs remain lit for more than about seven to ten minutes, see POST Fails on
page 7-9.
Green LEDs should be lit.
The fans on the appearance side of the enclosure should be working.
If ambient noise prevents you from hearing whether the fans are working, check for
air flow by holding your hand at the outlet grill located on the service side of the
enclosure just above slots 51 through 54.
After plugging in the AC power cords for the enclosure, if the enclosure does not power
on, see Added Enclosure Does Not Power On on page 7-3.
After applying power to the enclosure, if the LEDs on a PMF CRU or IOMF CRU
remain unlit:
Check that the power-on cables are properly attached so that each PMF CRU or
IOMF CRU can send the power-on signal to the next. For cabling patterns, see the
NonStop S-Series Hardware Installation and FastPath Guide.
If all power-on cables are attached correctly but the CRUs still do not start, see
CRU Does Not Start on page 7-6.
Caution. After an enclosure has been plugged into an AC power source once, unplugging and
then replugging its AC power cord powers on the enclosure prematurely. Therefore, do not
unplug and replug any AC power cords.
If you are expanding your system with enclosures taken from another system, plug in their AC
power cords last, after you have completed all other steps.
If you plug in an AC power cord prematurely (or plug it in and then unplug it), see AC Power
Cord Was Unplugged or Replugged on page 7-2.
Note. For problems with components in an IOAM enclosure, your service provider should see
the Modular I/O Installation and Configuration Guide.