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Table 29. Power consumption examples per enclosure (continued)
Model and type
2077/2078-12G, 2077/2078-24G, or
2077/2078-AFG
2077/2078-12G, 2077/2078-24G, or
2077/2078-AFG
2077-92G, 2077-A9G 2078-92G, 2078-
A9G
2077-92G, 2077-A9G 2078-92G, 2078-
A9G
Each SAS expansion enclosure contains two PSUs for redundancy. The total power consumption values
represent the total power that is drawn by both PSUs.
Environmental requirements
System airflow is from the front to the rear of each enclosure:
• Airflow passes between drive carriers and through each enclosure.
• Airflow for the upper 4U of the 5U enclosure enters the front, passes between the disk drives, and exits
through the large fans in the rear of the enclosure.
• Airflow for the lower 1U of the 5U enclosure is driven through the power supplies via 40 mm X 56 mm
fans. Air continues through the chassis cooling the ESMs or controllers and exits the rear of the
enclosure.
• The combined power and cooling module exhausts air from the rear of each canister.
Ensure that your environment falls within the ranges that are shown in Table 30 on page 92.
Table 30. Temperature requirements
Environment
Ambient temperature
Operating
5°C to 35°C
24 drives)
41°F to 95°F (41°F to 104°F
for 24 drives)
5°C to 30°C (41°F to 86°F)
Non-
1°C to 50°C (34°F to 122°F)
operating
Storage
1°C to 60°C (34°F to 140°F)
Shipping
-40°C to 60°C (-40°F to
140°F)
Dimensions and weight requirements for rack installation
Ensure that space is available in a standard 19" rack that can support the enclosure. The rack rail kits
support racks with either threaded round or square rail mounting holes. The following table lists the
dimensions and weights of the expansion enclosures.
92 FlashSystem 5100 : Quick Installation Guide for MTM 2078-4F4, 2078-4H4, 2078-12G, 2078-AFG,
2078-24G, 2078-A9G, 2078-92G, and 2078-UHB
Configuration
One enclosure with 24 15 K SAS
drives
One enclosure with 12 7.2 K
nearline SAS drives
One enclosure with 92 10 TB
nearline SAS drives
One enclosure with 92 15 TB tier
1 flash drives
Altitude
(5°C to 40°C for
0 - 2133 m (0
- 7000 ft)
2134 - 3048
m (7001 -
10000 ft)
-305 to
12192 m
(-1000 to
40000 ft)
Total power consumption
Relative humidity
8% to 80% noncondensing
8% to 80% noncondensing
5% to 80% noncondensing
5% to 100% condensing, but
not precipitating
234 W
158 W
848 W
748 W
Maximum
wet bulb
temperature
23°C (73°F)
27°C (80°F)
29°C (84°F)
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