System information

Dell
PowerEdge M1000e Technical Guide 32
Table 12. Full-Height Servers Per Power Supply Configuration
Power Supply
Configuration
Number of Servers
220–240V power
2700W PSUs
Number of Servers
220–240V power
2360W PSUs
Number of Servers
100–120V power
2700W/1350W PSUs
1
2+1
2+2
8 light,
7 medium, or
5 heavy
8 light,
5 medium, or
4 heavy
3 light,
2 medium, or
1 heavy
3+0
3+1
3+3
Any server combination
8 light,
8 medium, or
7 heavy
6 light,
4 medium, or
3 heavy
4+1
4+2
Any server
combination
8 light,
6 medium, or
4 heavy
5+1
8 light,
8 medium, or
6 heavy
1
With sufficient facility power available
The following information is applicable for full-height blade servers:
 Throttling (performance reduction to conserve power):
o 220-240V power:
 2 PSUs—Throttling will occur if heavily configured blades are worked very hard
at the same time.
 3 PSUs:
 4 processors—Some throttling will occur if heavily configured blades are
worked hard at the same time. Minimal throttling is expected for 16-
DIMM configurations.
 2 processors—Throttling may occur if all servers are run under a very
heavy load and have 130W processors and/or 32 DIMMs populated.
Minimal throttling is expected with 95W processors and/or 16 DIMMs.
 4 or 5 PSUs—No throttling will occur.
o 110V power—Throttling will occur in all power-supply configurations if a full set of
heavily configured blades are worked hard at the same time.
 Prioritized performance—Under throttling conditions, there will be a performance impact on
the lower-priority servers.
o Dell recommends you choose which servers are prioritized through CMC’s prioritization
feature.
o Multiple low-priority servers can spread out the impact of prioritization. If all servers
are the same priority, they would each experience a slight performance impact as the
throttling would be passed from server to server.
 Delayed power-ups—When pushing the limits of the guidelines listed in 0, 1–3 servers may not
be powered on during the initial power-up sequence if all servers were started
simultaneously. The servers may need to be powered on in a second power-up action after
the initial blades go through their post-boot power inventory and allocation. iDRAC 3.02
enables automatic retries if blades attempt simultaneous power-ups and do not power on.