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© Copyright IBM Corp. 2003, 2006 331
Chapter 27. BladeCenter
®
HS20 - 7981
Notes:
1. This model is a 32-bit platform only. 64-bit operating systems are not supported.
2. Model numbers provided are worldwide generally available variant (GAV) model numbers which are
not orderable as listed and need to be modified by country. The U.S. GAV model numbers use the
following nomenclature: xxU. For example, the U.S. orderable part number for 7981-2FY is 7981-2FU. See
the product-specific Official IBM announcement letter for other country-specific GAV model numbers.
GAV to MTM mapping for A.P. Geographies follow the same pattern. Substitute the last character with a
country-specific designator.
3. High-speed, two-way interleaved PC2-3200 RDIMMs. Maximum capacity requires replacing the
standard DIMMs. Memory-mirroring, hot-spare memory and Chipkill functions are supported.
4. System management functionality, interconnect network connectivity and console connectivity are
managed through the standard management module. The standard integrated service processor
monitors HS20 - MT 7981 system management activity, communicating with the management module in
the BladeCenter.
5. Dual Broadcom 5704S Gb Ethernet controllers.
6. An integrated, SAS controller supports integrated RAID-0 and 1.
7. Maximum internal storage capacity is based on installation of two 73.4GB SAS HDDs.
8. BladeCenter storage expansion units and PCI expansion units are not supported on the 7981.
Table 66. BladeCenter HS20 - 7981 At-A-Glance
Part Number
CPU./FSB Speed (GHz/MHz) - Cache
Processor Quantity (Std/Max)
Memory (Std/Max)
System Management Processor
Integrated Ethernet
Storage Controller
Internal HDD Interface
Internal HDD Storage (Std/Max)
HDD Bays (Std/Max)
Expansion Cards (Std/Max)
7981-2FY 1.67GHz/667MHz -
2MB L2 Dual Core
1/2 1GB/16GB Y Dual Gb SAS Fixed 0/146.8GB 0/2 0/1
7981-3FY 2.0GHz/667MHz -
2MB L2 Dual Core
1/2 1GB/16GB Y Dual Gb SAS Fixed 0/146.8GB 0/2 0/1
7981-EFY 1.67GHz/667MHz -
2MB L2 Dual Core
1/2 1GB/16GB Y Dual Gb SAS Fixed 0/146.8GB 0/2 0/1