HP ProLiant DL380 Compaq ProLiant DL380 Generation 2 Server High-Density Deplo - Page 13

Figuring Type and Number of PDUs, Non-Redundant Power

Get HP ProLiant DL380 - G2 Server PDF manuals and user guides View all HP ProLiant DL380 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 13 highlights

Compaq ProLiant DL380 Generation 2 Server High-Density Deployment in Compaq Racks 13 Compaq Confidential - Need to Know Required Figuring Type and Number of PDUs The type and number of PDUs required to power a full rack of servers depends on each server's power requirement, the number of servers deployed in the rack, and the available power for the servers. Compaq PDUs support both high-voltage and low-voltage applications. The input current rating for a ProLiant DL380 Generation 2 server is either 3.2 A at 200 to 240 volts or 6.4 A at 100 to 120 volts. To determine the number of servers supported by a PDU, divide the PDU's current rating by the server's total input current rating. IMPORTANT: The examples shown in the following sections use the maximum rating of the power supply. They are for reference only. Non-Redundant Power The following examples illustrate how to calculate the number of servers per PDU when using non-redundant power. Example One high-voltage PDU (P/N 207590-D72) has a current rating of 24 A. The server has a total input current rating of 3.2 A at 200 volts. 24 A (PDU current rating) / 3.2 A (server total input current rating) = 7 This PDU can support a maximum of 7 servers at full server input current ratings. Example One low-voltage PDU (P/N 207590-D71) has a current rating of 24 A. The server has a total input current rating of 6 A at 100 volts. 24 A (PDU current rating) / 6.4 A (server total input current rating) = 3 This PDU can support a maximum of 3 servers at full server input current ratings. Redundant Power The ProLiant DL380 Generation 2 server supports a redundant power supply. The power supply for this server automatically senses input voltage level. When using redundant power, it is necessary to use two PDUs per server. The following examples illustrate how to calculate the number of servers per pair of PDUs when using redundant power. Example Two high-voltage PDUs (P/N 207590-D72) have a combined current rating of 48 A. The server has a total input current rating of 3 A at 200 volts (redundant power). 2 [24 A (PDU current rating) / 3.2 A (server total input current rating)] = 7 These PDUs can support a maximum of 7 servers at full server input current ratings. Example Two low-voltage PDUs (P/N 207590-D71) have a current rating of 48 A. The server has a total input current rating of 6 A at 100 volts (redundant power). 14UH-0701A-WWEN

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
Compaq ProLiant DL380 Generation 2 Server High-Density Deployment in Compaq Racks
13
Compaq Confidential - Need to Know Required
14UH-0701A-WWEN
Figuring Type and Number of PDUs
The type and number of PDUs required to power a full rack of servers depends on each server’s
power requirement, the number of servers deployed in the rack, and the available power for the
servers.
Compaq PDUs support both high-voltage and low-voltage applications. The input current rating
for a ProLiant DL380 Generation 2 server is either 3.2 A at 200 to 240 volts or 6.4 A at 100 to
120 volts. To determine the number of servers supported by a PDU, divide the PDU’s current
rating by the server’s total input current rating.
IMPORTANT:
The examples shown in the following sections use the maximum rating of the
power supply. They are for reference only.
Non-Redundant Power
The following examples illustrate how to calculate the number of servers per PDU when using
non-redundant power.
Example
One high-voltage PDU (P/N 207590-D72) has a current rating of 24 A. The server has a total
input current rating of 3.2 A at 200 volts.
24 A (PDU current rating) / 3.2 A (server total input current rating) = 7
This PDU can support a maximum of 7 servers at full server input current ratings.
Example
One low-voltage PDU (P/N 207590-D71) has a current rating of 24 A. The server has a total
input current rating of 6 A at 100 volts.
24 A (PDU current rating) / 6.4 A (server total input current rating) = 3
This PDU can support a maximum of 3 servers at full server input current ratings.
Redundant Power
The ProLiant DL380 Generation 2 server supports a redundant power supply. The power supply
for this server automatically senses input voltage level.
When using redundant power, it is necessary to use two PDUs per server. The following
examples illustrate how to calculate the number of servers per pair of PDUs when using
redundant power.
Example
Two high-voltage PDUs (P/N 207590-D72) have a combined current rating of 48 A. The
server has a total input current rating of 3 A at 200 volts (redundant power).
2 [24 A (PDU current rating) / 3.2 A (server total input current rating)] = 7
These PDUs can support a maximum of 7 servers at full server input current ratings.
Example
Two low-voltage PDUs (P/N 207590-D71) have a current rating of 48 A. The server has a
total input current rating of 6 A at 100 volts (redundant power).