Specifications
DIMMs
The memory subsystem supports only DDR3 SDRAM technology using industry-standard 1.2”
high DIMMs.
BL890c i2 Min / Max
Memory size
BL870c i2 Min / Max
Memory size
BL860c i2 Min / Max
Memory size
Single DIMM
sizes
Not supportedNot supported8 GB / 48 GB2 GB
32 GB / 384 GB16 GB / 192 GB8 GB / 96 GB4 GB
32 GB / 768 GB32 GB / 384 GB16 GB / 192 GB8 GB
For more DIMM information, see “Installing DIMMs” (page 32).
Power subsystem
The power subsystem is located on the system board. Each server blade receives bulk DC voltage
from the enclosure. The server blade power block converts the DC voltage from the enclosure
to the voltage required by the server blade. The BL860c i2 Server Blade receives 12 V directly
from the enclosure. The voltage passes through E-Fuse circuitry that resides in the blade. The 12
V supply is on as long as a power supply is installed in the enclosure. A control line from the
enclosure OA can turn the E-Fuse on or off to supply or cut power to the blade. The 12 V gets
distributed to various POL converters. The switched POL voltage rails are: 0.9 V, 1.2 V, 1.5 V,
1.8 V, 2.5 V, 3.3 V, 5.0 V, 3.3 V standby, and 5.0 V standby.
Processor and supporting chipset
The BL860c i2 Server Blade contains a processor subsystem accommodating one or two Intel
Itanium processor modules.
Each processor module consists of the following:
• CPU chip, including CPU cores, QPI links for CPU-CPU and CPU-IO Hub chip connections,
and SMI links for CPU-Memory interface chip connections
• CPU power conversion module
• Heatsink, with mechanical attachment / assembly features
ICH mezzanine card
The ICH mezzanine card houses the following components:
• Intel ICH10 South Bridge
• ATI/AMD RN50/ES1000 Video Controller
• Embedded TPM 1.2
• The internal USB port
One ICH mezzanine card is required per system.
Scaleable BladeLink
Conjoining server blades using the Scaleable BladeLink enables four (BL870c i2) and eight (BL890c
i2) socket server blade variants.
In a conjoined configuration, one of the BL860c i2 Server Blades becomes the master blade, also
referred to as the monarch blade. The monarch server blade is in the lowest numbered enclosure
bay, communication to the conjoined server blade is done through the monarch blade.
Each Scaleable BladeLink includes a trap door for the label carrier. To access the label carrier:
1. Locate the indentation on the upper-right corner of the access door.
12 Overview