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StorEdge A1000

The StorEdge A1000 is very similar to the D1000, except that it offers a hardware-based RAID solution as opposed to the D1000' s software RAID. The A1000 can be attached to 2 hosts to support clustered configurations. Up to 10 A1000s can be daisy-chained together for single host configurations, although Sun does not recommend daisy-chaining more than 3 units for optimal performance. Relevant features of the A1000 include:

Sun StorEdge A1000 Array

* 4U sized enclosure
* 12 disk capacity
* Support for 18GB or 36GB UltraSCSI disks
* All disks hot-swappable
* 2 hot-swappable power supplies
* Differential UltraSCSI connection to host( s)
* Single and dual channel backplane
* Hardware based RAID
* Sun Raid Manager 6.x Software
* 24MB ( standard) to 80MB ( maximum) cache
* Battery backup for cache, up to 72 hours

Note: There is some confusion regarding the A1000' s dual SCSI ports. The A1000 can only be attached to two systems in a clustered environment and even then the unit can only be accessed by one system at a time! An A1000 is generally only intended to be attached to a single host. The second SCSI port is for the use of daisy-chaining additional A1000 units. Note that the A1000' s