![background image](http://html1.mh-extra.com/html/ibm/flashsystem-5000-series/flashsystem-5000-series_quick-installation-manual_3867405025.webp)
Table 8. Power rating examples for control enclosures and drives (continued)
Control
Enclosure
Drive Information
Watts
Type
Quantity
Block Size
Average
Peak
Idle
FlashSystem
5030
200 GB
24
4 K
273
281
249
256 K
299
315
249
900 GB SAS
10 KPM 2.5-
inch
24
256 K
350
359
316
Table 9 on page 7 shows examples of the power ratings of FlashSystem 5000 expansion enclosures
with different drive configurations.
Table 9. Power rating examples for 2U expansion enclosures
Drive quantity and type
Expansion enclosure
Average
Peak
Idle (Average)
24 SFF NL
193 W
12 LFF Flash
150 W - 180 W
12 LFF NL
166 W
165 W
Workload: 70/30 random cache miss; 4 K block size.
Table 10 on page 7 shows examples of the power ratings of 2072-92G / 2072-F92 expansion
enclosures with different drive configurations. The same power ratings apply to 2072-E92 expansion
enclosures.
Table 10. Power consumption examples per 5U expansion enclosure
Model and type
Configuration
Total power
consumption
Caloric value
(BTU/hr)
2072-92G / 2072-F92
1 enclosure with 92
10 TB nearline SAS
drives
848 W
-
2072-92G / 2072-F92
1 enclosure with 92
15 TB tier 1 flash
drives
748 W
-
Temperature requirements
Ensure that the temperature and humidity in the environment falls within the ranges that are shown in
Table 11 on page 8. 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 expansion 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 expansion enclosure is driven through the power supplies through 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.
Chapter 2. Environmental requirements 7
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