Ultra-Dense Server Deployment in Racks

Compaq Ultra-Dense Server Deployment in Compaq Racks 35
128H-0400A-WWEN
3.5 Configuration-E: 36 Full-rated Servers, Low Voltage
This configuration shows a 42U rack with a maximum number of servers in a low voltage facility. If high
voltage input is available, then this configuration is not recommended, because fewer than 42
ProLiant DL360 servers will be supported in a 42U rack, considering the maximum input current
rating for the servers. In N.A., assuming 110V line voltage, only up to 36 servers can be supported with
4 Low Voltage 24A PDUs. In Japan, assuming 100V line voltage, only up to 32 servers can be supported
with 4 Low Voltage 24A PDUs. This example configuration is illustrated here for the N.A. market.
Note that up to 4 Compaq Low Voltage PDUs can be installed in the sides of a Compaq 36U or 42U
racks. Each ProLiant DL360 server can consume up to 2.7A @110V, i.e., each 24A PDU can support up
to 9 ProLiant DL360 servers. Therefore, with 4 Low Voltage 24A PDUs, only up to 36 servers can be
supported.
Note that up to 42 servers may be installed, if the deployment plan can support de-rated power for each
ProLiant DL360 server power supply. See Section 3.4.
The remaining space in a 42U rack is available for other devices, such as network switches. If no network
switches are installed in this rack, then there will be several standard network cables exiting the rack,
which are to be routed to appropriate off-rack switches. In the configuration summary below, all network
switches are located outside of the rack.
Configuration-E Summary
Rack Contents
Units
36 servers with all fixed or all sliding rails with cable trays
4 Low Voltage 24A PDUs vertically mounted in the side panel compartments
Internal Cables
36 power cords going to 4 PDUs in the side panels [These cables are supplied
with the servers.]
Cables External to Rack
36 (management) network cables from the optional Remote Insight Lights-Out
Edition RJ-45 connector to external switches
36 (data) network cables from on-board RJ-45 to external switches, assuming
use of only one LAN connection per server.
4 input power cords from the rack to external power outlets
Site Utility Requirements (worst-case)
Power: 4 dedicated 100V-120V 30A branch circuits.
Thermal: up to 35,850 BTUs/hour [This number is a worst-case. The actual
BTUs/hour will depend on the OS/application software running and the
server hardware configurations.]
Weight: up to 1,518 lb (with sliding-rails) [The network cables are not
accounted for since most implementations route the network cables to the
ceiling-hung cable rails outside of the rack.]
22 Server 22
21 Server 21
20 Server 20
19 Server 19
17 Server 17
18 Server 18
16 Server 16
15 Server 15
14 Server 14
13 Server 13
12 Server 12
11 Server 11
10 Server 10
35 Server 35
36 Server 36
34 Server 34
33 Server 33
32 Server 32
30 Server 30
31 Server 31
29 Server 29
28 Server 28
27 Server 27
42
40
41
39
38
37
26 Server 26
25 Server 25
24 Server 24
23 Server 23
8 Server 8
9 Server 9
7 Server 7
6 Server 6
5 Server 5
4 Server 4
3 Server 3
2 Server 2
1 Server 1