Table of Contents
Advertisement
Appendix D. SAS expansion enclosure requirements
Before you install any 2U or 5U SAS expansion enclosure, your physical environment must meet certain
requirements. This includes verifying that adequate space is available and that requirements for power
and environmental conditions are met.
Power requirements for each power supply (two per enclosure)
Ensure that your environment meets the following power requirements.
To aid in power and cooling requirements planning, Table 28 on page 91 lists the rating of each power
supply unit (PSU) by enclosure.
The power that is used by the system depends on several factors, including the number of enclosures and
drives in the system and the ambient temperature.
Table 28. Power specifications per power supply
Model and
PSU
type
2077/2078-1
764 W (2)
2F,
2077/2078-2
4F, or
2077/2078-
AFF
2077-92F,
2400 W (2)
2077-A9F
2078-92F,
2078-A9F
Note: One or more C19 power distribution units (PDU) are needed in the rack to connect power to the
power supplies for 5U expansion enclosures.
The power and thermal measurements that are shown in Table 29 on page 91 were obtained in the
specific operating environment and under the conditions described. These measurements are presented
as an illustration; measurements that are obtained in other operating environments might vary. Conduct
your own testing to determine specific measurements for your environment.
Table 29. Power consumption examples per enclosure
Model and type
2077/2078-12F, 2077/2078-24F, or
2077/2078-AFF
2077/2078-12F, 2077/2078-24F, or
2077/2078-AFF
©
Copyright IBM Corp. 2019, 2020
Input power requirements
100 V to 240 V single phase
AC at a frequency of 50 Hz to
60 Hz
AC 200 - 240 V~ nominal; +/-
10% tolerant)
50/60 Hz (nominal; 47 - 63 Hz
tolerant)
Configuration
One enclosure with 24 2.5-inch
flash drives
One enclosure with 24 10 K SAS
drives
Maximum
Maximum
input current
power output
10A for 100 V
764 W
6A for 240 V
12 A (x2 - per
2400 W
inlet
redundancy)
Requires an
IEC C20
appliance
coupler
(16-20A
branch circuit
or C19 power
socket PDU)
Total power consumption
Caloric value
(BTU/hr)
2607
8189
151 W
175 W
91
Advertisement
Table of Contents
