IBM DS8900F, Введение и руководство по планированию, Страница: 105 / 172

Table 43. Floor load ratings and required weight-distribution areas (continued)
Configuration
a
Total weight of
configuration
b
Floor load
rating, kg per
m
2
(lb per ft
2
)
Weight distribution areas
c, d, e
Sides
cm (in.)
Front
cm (in.)
Rear
cm (in.)
Notes:
a. A storage system contains a base frame and any expansion frames that are associated with it.
b. The base frame and expansion frame are bolted together. The weights represent a combined configuration,
fully populated with all enclosures and adapters.
c. Weight distribution areas cannot overlap.
d. Weight distribution areas are calculated for maximum weight of the frames.
Note: Keep any future upgrades in mind, and plan for the highest possible weight distribution.
e. The base and expansion frames in each storage system are bolted to each other. Move one side cover and
mounting brackets from the base frame to the side of the expansion frame. Side clearance for frames that
are bolted together applies to both sides of the assembled frames.
Calculating space requirements
When you are planning the installation site, you must first calculate the total amount of space that is
required for the storage system. Consider future expansion, and plan accordingly.
Procedure
Complete the following steps to calculate the amount of space that is required for your storage system.
1. Determine the dimensions of each frame configuration in your storage system.
2. Calculate the total area that is needed for frame configuration by adding the weight distribution area to
the dimensions determined by using the table in “Meeting floor load requirements” on page 89.
3. Determine the total space that is needed for the storage system by planning the placement of each
frame configuration in the storage system and how much area each configuration requires based on
step “2” on page 91.
4. Verify that the planned space and layout meet the service clearance requirements for each frame and
storage system.
Dimensions and weight of individual models
When you are planning the floor and space requirements for your storage system, consider the
dimensions and weights of the frames that compose your storage system.
The following table provides dimensions and weights.
Table 44. DS8900F dimensions and weights
Model Dimensions
1
Maximum weight
DS8900F Model 993
Height
15U or 66.6 cm (26.25 in.)
16U or 71.1 cm (28 in.)
20U or 88.9 cm (35 in.)
Width
46.5 cm (18.3 in.)
Depth
70 cm - 78 cm (27.6 in. - 30.7 in.)
246 kg (543 lb)
Chapter 6. Delivery and installation requirements 91