| Blade servers |
Business use |
Processor (Max) |
Internal Memory (max) |
Storage (max) |
IBM BladeCenter HS12
 |
Cost-efficient uniprocessor blade ideal for general business applications such as file and print, collaboration and Web serving. |
1-socket single, dual or quad-core Intel® Xeon® |
Up to 24GB |
Up to 293.6GB with hot-swap SAS or non-hot-swap SATA HDDs or up to 32GB with hot swap or non-hot swap solid state drives. |
IBM BladeCenter HS21 extended memory
 |
The IBM BladeCenter® HS21 XM is a high-density blade server providing expanded memory and processing power to enterprise environments. |
Dual-Core Intel® Xeon® up to 3.00 GHz or Quad-Core Intel Xeon up to 3.0 GHz and up to 1333 MHz front-side bus |
Up to 64GB |
0 GB – 587.2 GB (four 146.8 GB HDDs) |
IBM BladeCenter HS21
|
The HS21 blade is a high-density blade server providing an efficient, integrated solution. |
2-socket dual-core or quad-core Intel® Xeon® |
Up to 32GB |
Up to 367GB with 2 SAS HDDs |
IBM BladeCenter LS42
 |
Unique upgradeable SMP blade ideal for high performance computing, virtualization, consolidation and database applications |
2-socket 30mm or 4-socket 60mm, quad-core AMD Opteron™ |
Up to 128GB |
Up to 62.8GB using highly reliable solid-state drives or up to 293.6GB internally with 2 SAS HDDs; up to 734GB with Storage and I/O Expansion blade installed |
IBM BladeCenter LS41
 |
Scalable SMP blade ideal for virtualization, consolidation and database applications. |
4-socket dual-core AMD Opteron |
Up to 64GB |
Up to 367GB with 2 SAS HDDs |
IBM BladeCenter LS22
 |
High Performance Computing blade ideal for memory-intensive applications including research, modeling and simulation |
2-socket, quad-core AMD Opteron™ |
Up to 64 GB |
Up to 62.8GB using highly reliable solid-state drives or up to 293.6GB internally with 2 SAS HDDs; up to 734GB with Storage and I/O Expansion blade installed |
IBM BladeCenter LS21
|
Energy efficient mainstream blade ideal for collaboration, Web serving and general-purpose applications. |
2-socket dual-core AMD Opteron™ |
Up to 32GB |
Up to 293.6GB with 1 SAS HDD |
IBM BladeCenter JS12 Express
 |
Durable blade ideal for small database and application serving and for replacing traditional AIX®, IBM i or Linux® rack-mount and tower servers. |
1-socket dual-core 64-bit IBM POWER6™ with AltiVec™ SIMD accelerator |
Up to 64GB |
Up to 292GB with 2 SAS HDDs |
IBM BladeCenter JS22 Express
 |
Feature-rich blade ideal for workload consolidation with built-in PowerVMTM virtualization and broad based commercial AIX®, IBM i or Linux® for Power™ applications. |
2-socket dual-core 64-bit IBM POWER6™ with AltiVec™ SIMD accelerator |
Up to 32GB |
Up to 146GB with 1 SAS HDD |
IBM BladeCenter QS22
 |
High Performance computing blade ideal for accelerating key algorithms such as 3D rendering, compression and encryption with double precision floating point computing power. |
2-socket multi-core PowerXCellTM 8i |
Up to 32 GB |
Optional 8GB modular flash drive |
IBM BladeCenter QS21
 |
High Performance Computing blade ideal for tasks that require single-precision processing such as image processing, signal processing and graphics rendering. |
2-socket multi-core Cell/B.E |
2GB |
n/a |
IBM BladeCenter PN41
 |
Deep Packet Inspection (DPI) functional blade ideal for enhancing security and improving control of network traffic. |
Contains an Intel® IXP 2805 network processor for use in handling packets. |
Contains multiple types of memory such as TCAM, QDR and RDRAM. |
Contains no disk or flash drives |