Description
The LS21 and LS41 for BladeCenter blade servers, coupled with the BladeCenter chassis,
advance application serving with performance, density, and scalability.
At your command are:
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Powerful, two-way SMP-capable Opteron processors
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High-speed memory with error checking and correction (ECC)
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Dual Gigabit Ethernet connections (LS21 and two-socket LS41)
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Four Gigabit Ethernet connections (four-socket LS41)
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SAS RAID-1 (mirroring) supported in 32-bit legacy mode only (LS 21 requires optional SIO
blade)
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Dual Gigabit Ethernet connections
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Advanced high availability and systems management features
These features offer a new, economical approach to the deployment of large numbers of
powerful servers that require less space and fewer power resources.
These next-generation processors use one 1 GHz interprocessor HyperTransport bus.
AMD Opteron LS21 and AMD Opteron LS41 for IBM BladeCenter
High-performance blade server subsystems: The LS21 and LS41 for BladeCenter blade
servers are high-throughput, highly scalable, two-socket, and four-socket, SMP-capable, AMD
Opteron-based blade servers. AMD Opteron processor cores support a 64 KB two-way set
associative L1 instruction cache and a 64 KB two-way set associative L1 data cache. In addition,
each core supports a 1 MB L2 cache that is 16-way set associative for both instruction and data.
On a dual-core processor each processing core contains an independent set of L1 and L2
caches.
The processors used in these blades are standard- and low-power, full-performance Opteron
processors. The specially manufactured low-power AMD Opteron processors operate at 68 W or
less without any performance tradeoffs. This savings in power at the processor level, combined
with the smarter power solution that BladeCenter delivers, make these blades very attractive to
clients who have limited power and cooling resources.
One AMD Opteron processor with 64-bit capability is standard on the blade servers. High-speed
DDR2 SDRAM is synchronized for up to 667 MHz processor-to-memory subsystem
performance.
The LS21 and LS41 for BladeCenter use the ServerWorks chipset that includes:
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ServerWorks HT-2000 HyperTransport System I/O Controller
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ServerWorks HT-1000 South Bridge
The Opteron processor includes an integrated main memory controller:
IBM United States Announcement 107-103
IBM is a registered trademark of International Business Machines Corporation
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