Smart Array 4250ES Controller


More From: HP/Compaq
Item #: 165743
Mfr. Part#: 295635-B21
Availability: On Order
Est. Ship: Call for Availability
Designed to optimize storage availability and performance in the ProLiant 6000, 7000 and 8000 servers, the Smart Array 4250ES Controller is Compaq's cable-free 64-bit Wide Ultra2 SCSI Array controller.
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Smart Array 4250ES Controller - 295635-B21

    The Smart Array 4250ES Controller is a uniquely cable-free, Extended SCSI (ES) controller design that enables hot-plug redundant array controllers inside an industry standard PCI servers. It works in the ProLiant 6000, 7000 and 8000 servers and compatible with Wide Ultra2 and Wide-Ultra SCSI hard drives. In addition to having 64MB (56MB useable for read/write cache, 8MB for transfer buffer and scripts memory) ECC-protected and battery-backed removable read/write cache, this controller's three SCSI channels provide up to 120MB/s
    throughput. These three channels can support up to twenty-one 1" drives on a single controller for the Proliant 8000 (with 18.2GB drives, you can add 382.2GB of storage) and can support twelve 1.6" drives or eighteen 1" drives in the Proliant 6000 and 7000. It supports Distributed Data Guarding (RAID 5) that allocates parity data across multiple drives and allows simultaneous write operations. This controller also has Data Guarding (RAID 4) which writes parity data to a single, dedicated parity drive. Also, its Drive Mirroring (RAID 1, 0+1) allocates half of the drive array to data and the other half to mirrored data, providing two copies of every file.     

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