Features and specifications for the BladeCenter T Type 8720 unit
The following table provides a summary of the features and specifications of the
BladeCenter T Type 8720 unit.
Table 1. BladeCenter T Type 8720 features and specifications
Media tray (on front):
v DVD/CD-RW drive: slim IDE
v Two Universal Serial Bus (USB) v2.0
full speed ports
v System-status panel
Module bays (on front):
v Eight hot-swap blade bays
v Four hot-swap power-module bays
v Two hot-swap management module
bays
Module bays (on rear):
v Four hot-swap I/O module bays
v Four hot-swap blower bays
v One hot-swap KVM (keyboard, video,
mouse) module
v One hot-swap LAN module
Power modules:
v Standard: Two 1300-watt or greater
hot-swap -48 V dc (-40 to -60 V dc)
power modules
– Power modules 1 and 2 supply
power to:
- Blade bays 1 through 4
- Management modules 1 and 2
- I/O modules 1 and 2
- Media tray
- All KVM, LAN, and alarm
interfaces
- All four blower modules
– Power modules 1 and 2 provide
redundancy to each other
v
Maximum: Four 1300-watt or greater
hot-swap -48 V dc (-40 to -60 V dc)
power modules
– Power modules 3 and 4 supply
power to:
- Blade bays 5 through 8
- I/O modules 3 and 4
– Power modules 3 and 4 provide
redundancy to each other
– Blowers are powered by all four
power modules
LAN module:
v Two 10/100 Mb Ethernet remote
management connections
v One DSUB 15P alarm connector
KVM module:
v Video port (analog)
v PS/2 keyboard port
v PS/2 mouse port
v System-status panel
I/O modules:
v Standard: None
v Maximum: Four
– Two hot-swap 1 Gb Ethernet
four-port switch modules
– Two hot-swap switch modules of
another network-communication
standard, such as Fibre Channel
Management module:
v Standard: One hot-swap management
module providing system-management
functions for the BladeCenter T unit
v Maximum: Two hot-swap management
modules (one active, one redundant)
Redundant cooling:
Four variable-speed hot-swap blowers
Front bezel with changeable filter
Upgradeable microcode:
v management module firmware
v I/O-module firmware (not all I/O module
types)
v Blade server service processor firmware
(BIOS, service processor)
Size (8 U):
v Height: 349.25 mm (13.75 in. or 8 U)
v Depth: 508 mm (20 in.) from front of
chassis to rear I/O connector plane
Maximum depth: 600 mm (23.62 in.)
including bezel, handles, and cable
bend radius.
v Width: 442 mm (17.4 in.)
v Weight:
– Fully configured with modules and
blade servers: Approx. 100.2 kg (221
lb)
– Fully configured without blade
servers: Approx. 61.7 kg (136 lb)
Security features:
v Login password for remote connection
v Lightweight Directory Access Protocol
(LDAP) and role based security for user
authentication and authorization
v Secure Shell (SSH) for remote
command-line interface
v Secure socket layer (SSL) security for
remote Web interface access
Predictive Failure Analysis
®
(PFA)
alerts:
v Blowers
v Blade-dependent features
v Power supplies
Declared acoustical noise emission levels
for normal operations:
v Sound-power levels (upper-limit): 7.8 bels
v Sound-pressure levels (average), for four
one-meter bystander positions: 63 dBA
The noise emission levels stated are the
declared upper limit sound-power levels, in
bels, for a random sample of machines. All
measurements made in accordance with ISO
7779 and reported in conformance with ISO
9296.
Environment:
v Air temperature:
– Altitude: -60 to 1800 m (-197 ft to 6000
ft)
- BladeCenter T on: 5° to 40°C (41° to
104°F)
- BladeCenter T on (short term): -5° to
55°C (23° to 131°F)
– Altitude: 1800 m to 4000 m (6000 ft to
13000 ft)
- BladeCenter T on: 5° to 30°C (41° to
86°F)
- BladeCenter T on (short term): -5° to
45°C (23° to 113°F)
– System unit off: uncontrolled
v
Rate of temperature change: 30°C/hour
(54°F/hour)
v Humidity:
– BladeCenter T on: 5% to 85%
– BladeCenter T on (short term): 5% to
90% not to exceed 0.024 water/kg of dry
air
– BladeCenter T off: uncontrolled
Electrical input:
v dc power
v Input voltage: -48 V dc (-38 V dc to -75 V
dc)
v Input current:
– Chassis: 70 amp maximum
– Single power-supply feed: 70 amp
maximum
v
Input connector type: Two (2) four post DC
terminals, rated at 70 amps each.
Heat output:
v Input kilovolt-amperes (kVA) approx.
– Minimum configuration: 0.2 kVA
– Maximum configuration: 3.7 kVA
v BTU output
– Ship configuration:
673 Btu/hour (197 watts)
– Full configuration:
12640 Btu/hour (3707 watts)
Chapter 1. General information 5