IBM Netfinity 5100 8658 21Y, Manual

Page: 72 / 246

System reliability considerations
To help ensure proper cooling and system reliability, make
sure:
v
Each of the drive bays has either a drive or a filler panel
installed.
v Each of the power supply bays has either a power
supply or a filler panel installed.
v The cover is in place during normal operations, or is
removed for no longer than 30 minutes while the server
is operating.
Note: The front door (tower model) can be removed
permanently without affecting system reliability.
v There is space around the server to allow the server
cooling system to work properly.
– On a tower model, leave about 127 mm (5 in.) of
space around the front and rear of the server.
– On a rack model, refer to the documentation that
comes with the rack.
v A removed hot-swap drive is replaced within two
minutes of removal.
v
Cables for optional adapters are routed according to the
instructions provided with the adapters.
v A failed fan is replaced within 48 hours.
Working inside a server with power on
Your server is designed to operate safely while turned on
with the cover removed, such as when you are following
the light path diagnostics (see “Light path diagnostics” on
page 18). Follow these guidelines when you work inside a
server that is turned on:
v Avoid loose-fitting clothing on your forearms. Button
long-sleeved shirts before working inside the server; do
not wear cuff links while you are working inside the
server.
v Do not allow your necktie or scarf to hang inside the
server.
v
Remove jewelry, such as bracelets, rings, necklaces,
and loose-fitting wrist watches.
v Remove items from your shirt pocket (such as pens or
pencils) that could fall into the server as you lean over
it.
v
Take care to avoid dropping any metallic objects, such
as paper clips, hair pins, or screws, into the server.
62
: Netfinity 5100 Type 8658 Models 11Y, 21Y, 31Y,
41Y, 51Y, 1RY, 2RY, 3RY, 4RY, 5RY