The BladeCenter® HS23 is a next-generation two-socket blade server running the Intel® Xeon® processor E5-2600 product family. With its industry-leading RAS features, energy efficiency, outstanding performance, flexible and scalable I/O, and complete systems management, HS23 offers a robust platform optimized for your mission-critical applications. Standard 30 mm single-wide form-factor protects your investments by providing compatibility with the BladeCenter H, E, S, and HT chassis.


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IBM BLADE HS23 – Specifications

Form Factor

Single-wide (30 mm) blade server.

Chassis Support

BladeCenter H, BladeCenter HT, BladeCenter S, BladeCenter E. (Some configurations might have restrictions. See Table 5 for compatibility details.)


Up to two Intel Xeon processor E5-2600 product family CPUs with eight-core (up to 2.7 GHz) or six-core (up to 2.9 GHz) or quad-core (up to 3.3 GHz) or dual-core (up to 3.0 GHz). Two QPI links up to 8.0 GT/s each. Up to 1600 MHz memory speed. Up to 20 MB L3 cache.


Intel C600


Up to 16 DDR3 DIMM sockets (8 DIMMs per processor) using Very Low Profile (VLP) DIMMs. Support for up to 1600 MHz memory speed depending on the processor. Four memory channels per processor (2 DIMMs per channel).

Memory Maximums

Up to 512 GB with 16x 32 GB RDIMMs and two processors.

Memory Protection

ECC, Chipkill, memory mirroring, and memory rank sparing.

Disk Drive Bays

Two 2.5″ hot-swap SAS/SATA drive bays supporting SAS, SATA, and SSD drives.

Maximum Internal Storage

Up to 3.6 TB with 1.2 TB 2.5″ SAS HDDs, or up to 2 TB with 1 TB 2.5″ NL SAS HDDs, or up to 2 TB with 1 TB 2.5″ SATA HDDs, or up to 3.2 TB with 1.6 TB 2.5″ SAS SSDs. Intermix of SAS and SATA HDDs and SSDs is supported.

RAID Support

RAID 0, 1, 1E, and 10 with integrated LSI SAS2004 controller.

Network Interfaces

Two Gigabit Ethernet ports and two 10 Gb Ethernet ports with integrated Emulex BladeEngine 3 (BE3) controller.

PCI Expansion Slots

One CIOv slot (PCIe 3.0 x8) and one CFFh slot (PCIe 3.0 x16). Two additional PCIe 2.0 x8 standard form factor slots (slot 1 is full-height full-length, slot 2 is full-height half-length) with the optional PCI Express Gen 2 Expansion Blade II. One HS23 supports up to four PCIe expansion blades (8 slots).


One internal USB port (for embedded hypervisor).

Hot-Swap Components

Hard drives.

Systems Management

UEFI, Integrated Management Module II (IMM2) with Renesas SH7757 controller, Predictive Failure Analysis, light path diagnostics, Automatic Server Restart, Systems Director and Systems Director Active Energy Manager, ServerGuide.

Security Features

Power-on password, administrator’s password, Trusted Platform Module (TPM 1.2).


Matrox G200eR2 video core with 16 MB video memory integrated into the IMM2. Maximum resolution is 1600×1200 at 75 Hz with 16 M colors (32 bits per pixel).

Operating Systems Supported

Microsoft Windows Server 2012 R2, 2012, 2008 R2, and 2008 (x64); Red Hat Enterprise Linux 5 (x64), 6 (x86 and x64), and 7; SUSE Linux Enterprise Server 10 (for AMD64/EM64T), 11 (for x86 and AMD64/EM64T), and 12; Oracle Solaris 10 and 11; VMware ESX 4.1 and ESXi 4.1, and VMware vSphere 5.0, 5.1, 5.5, and 6.0.

Service And Support

Optional service upgrades are available through Lenovo Services: 4-hour or 2-hour response time, 8-hour fix time, 1-year or 2-year warranty extension, remote technical support for System x hardware and selected third-party (Microsoft, Linux, VMware) software.


Maximum configuration (single-wide blade): 5.4 kg (12 lb).


Height: 245 mm (9.7 in), width: 29 mm (1.14 in), depth: 446 mm (17.6 in).