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The IBM 46C5099 is a system board for the IBM BladeCenter HS21 XM, machine types 7995 and 1915. It is the replacement board for the models EHx, G1x, G2x, G3x, G4x, G5x, G6x, G7x, GLx, GNx, HVx, R1x, R2x and RLx. The remaining models other than EVx use system board 43W4021 instead.
These models differ in processor. In the HS21 XM service parts, the G7x models take a 3.16 GHz 120 W microprocessor (43W4006), the EHx, G6x and HVx models a 3.0 GHz 80 W processor (43W4005), the R2x models a 3.33 GHz 80 W processor (43W4034), the GLx models a 2.5 GHz 50 W processor (46C5054), the GNx models a 2.13 GHz 40 W processor (46C5095) and the RLx models a 3.0 GHz 40 W processor (46C5055).
The HS21 XM is a blade server that takes one or two Intel Xeon processors, dual-core or quad-core. It supports up to 32 GB of PC2-5300 667 MHz DDR2 ECC memory, one non-hot-swap SAS small-form-factor hard drive of up to 146 GB, and dual Broadcom 5708S Gigabit Ethernet connections with failover support. An integrated system management processor is on the board.
The blade can add the IBM BladeCenter Storage and I/O Expansion Blade, which brings three more hot-swap SAS small-form-factor drives with RAID 0, 1 or optional RAID 5 support.
| Designation | IBM BladeCenter HS21 XM system board |
| Replacement part number | 46C5099 |
| Fits | IBM BladeCenter HS21 XM, machine types 7995 and 1915 |
| Models using 46C5099 | EHx, G1x, G2x, G3x, G4x, G5x, G6x, G7x, GLx, GNx, HVx, R1x, R2x, RLx |
| Other models | system board 43W4021 |
| Processors on the blade | one or two Intel Xeon, dual-core or quad-core |
| Memory on the blade | up to 32 GB PC2-5300 667 MHz DDR2 ECC |
| Drive on the blade | one non-hot-swap SAS small-form-factor drive, up to 146 GB |
| Network on the blade | dual Broadcom 5708S Gigabit Ethernet with failover |