Notices and statements in this document
The caution and danger statements in this document are also in the multilingual
Safety Information document, which is on the Documentation CD. Each statement is
numbered for reference to the corresponding statement in your language in the
Safety Information document.
The following notices and statements are used in this document:
v Note: These notices provide important tips, guidance, or advice.
v Important: These notices provide information or advice that might help you avoid
v Attention: These notices indicate potential damage to programs, devices, or
v Caution: These statements indicate situations that can be potentially hazardous
v Danger: These statements indicate situations that can be potentially lethal or
Features and specifications
The following information is a summary of the features and specifications of the
server. Depending on the model, some features might not be available, or some
specifications might not apply.
Racks are marked in vertical increments of 4.45 cm (1.75 inches). Each increment
is referred to as a unit, or "U." A 1-U-high device is 1.75 inches tall.
1. Power consumption and heat output vary depending on the number and type of
2. The sound levels were measured in controlled acoustical environments
System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
inconvenient or problem situations.
data. An attention notice is placed just before the instruction or situation in which
damage might occur.
to you. A caution statement is placed just before the description of a potentially
hazardous procedure step or situation.
extremely hazardous to you. A danger statement is placed just before the
description of a potentially lethal or extremely hazardous procedure step or
optional features that are installed and the power-management optional features
that are in use.
according to the procedures specified by the American National Standards
Institute (ANSI) S12.10 and ISO 7779 and are reported in accordance with ISO
9296. Actual sound-pressure levels in a given location might exceed the
average values stated because of room reflections and other nearby noise
sources. The declared sound-power levels indicate an upper limit, below which
a large number of computers will operate.