HP DL165 Technologies for HP ProLiant 100-series G5 (Generation 5) servers, 2n - Page 8

HP SC44Ge HBA, HP Smart Array controllers

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The ProLiant 100-series servers support 3.5-inch SAS and SATA drives through the use of the SAS SC44Ge Host Bus Adapter (HBA), the Smart Array E200 controller, or the Smart Array P400 PCIe Controller card (Figure 5). Figure 5. HP SAS controllers HP Smart Array E200 Controller HP SC44Ge HBA HP Smart Array P400 Controller HP SC44Ge HBA The SC44Ge HBA provides basic RAID 0/1 connectivity for up to eight devices6: four through a x4 internal connector and four through a x4 external connector. The HBA supports both 3-Gb SAS and 1.5-Gb SATA devices, and configurations can be mixed (SAS and SATA), allowing maximum flexibility. Eight 3-Gb/s ports provide a total storage bandwidth of up to 24 Gb/s, nearly four times the speed of a dual-channel U320 SCSI adapter. HP Smart Array controllers HP Smart Array controllers offer advanced RAID solutions with a battery-backed write cache (BBWC) available as an option. The cache buffers disk writes so that disk I/O can be handled efficiently. The battery prevents information in the buffer from being lost during an unexpected system shutdown. In the case of a complete system failure, the controller and disks can be moved to a different server, where the controller will flush out the cache to the disks after power has been restored. In the case of a controller failure, the cache module and disks can be moved to a working controller, where the cache will be flushed out to the disks. The battery will last up to two days without receiving any power from the computer. The E200 controller provides the best price/performance. The E200 controller has a x4 PCIe I/O connector and is available in full-size and mezzanine card form factors. The full-size E200 card has eight SAS ports and uses DDR1-266 cache memory. The E200 mezzanine card has four SAS ports. The E200 supports RAID 0/1 and can be upgraded for RAID 5 with the 128-MB BBWC module. The P400 controller is ideal for internal disk storage and for storage enclosures that require advanced RAID capability. The P400 controller has a x8 PCIe I/O connector and supports RAID levels 0, 1, 6 More devices may be connected using SAS expander technology. 8

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The ProLiant 100-series servers support 3.5-inch SAS and SATA drives through the use of the SAS
SC44Ge Host Bus Adapter (HBA), the Smart Array E200 controller, or the Smart Array P400 PCIe
Controller card (Figure 5).
Figure 5.
HP SAS controllers
HP Smart Array E200 Controller
HP Smart Array P400 Controller
HP SC44Ge HBA
HP SC44Ge HBA
The SC44Ge HBA provides basic RAID 0/1 connectivity for up to eight devices
6
: four through a x4
internal connector and four through a x4 external connector. The HBA supports both 3-Gb SAS and
1.5-Gb SATA devices, and configurations can be mixed (SAS and SATA), allowing maximum
flexibility. Eight 3-Gb/s ports provide a total storage bandwidth of up to 24 Gb/s, nearly four times
the speed of a dual-channel U320 SCSI adapter.
HP Smart Array controllers
HP Smart Array controllers offer advanced RAID solutions with a battery-backed write cache (BBWC)
available as an option. The cache buffers disk writes so that disk I/O can be handled efficiently. The
battery prevents information in the buffer from being lost during an unexpected system shutdown. In
the case of a complete system failure, the controller and disks can be moved to a different server,
where the controller will flush out the cache to the disks after power has been restored. In the case of
a controller failure, the cache module and disks can be moved to a working controller, where the
cache will be flushed out to the disks. The battery will last up to two days without receiving any power
from the computer.
The E200 controller provides the best price/performance. The E200 controller has a x4 PCIe I/O
connector and is available in full-size and mezzanine card form factors. The full-size E200 card has
eight SAS ports and uses DDR1-266 cache memory. The E200 mezzanine card has four SAS ports.
The E200 supports RAID 0/1 and can be upgraded for RAID 5 with the 128-MB BBWC module.
The P400 controller is ideal for internal disk storage and for storage enclosures that require advanced
RAID capability. The P400 controller has a x8 PCIe I/O connector and supports RAID levels 0, 1,
6
More devices may be connected using SAS expander technology.
8