IBM p5 590, System Handbook

Page: 282 / 316

260
IBM
Eserver
p5 590 and 595 System Handbook
Doors and covers
Doors and covers are an integral part of the system and are required for product
safety and EMC compliance. The following rear door options are available for the
model 9119-590 and 9119-595:
Enhanced acoustical cover option
This feature provides a low-noise option for clients or sites with stringent
acoustical requirements and where a minimal system footprint is not critical. The
acoustical cover option consists of a special front and rear doors that are
approximately 250 mm (10 in.) deep and contain acoustical treatment that lowers
the noise level of the machine by approximately 7 dB (0.7 B) compared to the
Slimline doors. This reduction in noise emission levels means that the noise level
of a single model system with Slimline covers is about the same as the noise
level of five model systems with acoustical covers.
Slimline cover option
This feature provides a smaller-footprint and lower-cost option for clients or sites
where space is more critical than acoustical noise levels. The Slimline cover
option consists of a front door, which is approximately 100 mm (4 in.) deep, and a
rear door, which is approximately 50 mm (2 in.) deep. No acoustical treatment is
available for this option.
Raised-floor requirements and preparation
A raised-floor is required for the model 9119-595 and its associated frames to
ensure optimal performance and to comply with electromagnetic compatibility
(EMC) requirements. A raised-floor is not required for the model 9119-590, but
we recommend it for optimum system cooling and cable management.
Raised-floor cutouts should be protected by electrically nonconductive molding,
appropriately sized, with edges treated to prevent cable damage and to prevent
casters from rolling into the floor cutouts.
Front-service access is necessary on the model 9119-590 and 9119-595 to
accommodate a lift tool for the servicing of large drawers (the processor books
and I/O drawers). Front and rear service access is necessary to accommodate
the lift tool for servicing of the optional integrated battery backup (IBB).