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SMA-809
SMA-809 3U Height 8 bays ATA to SCSI External Subsystems

Intorduction

* Supported RAID Levels:
  JBOD-disk spanning for capacity, RAID 0-striping for performance
  RAID 1-disk mirroring,RAID 0+1-mirroredstripe set, RAID 3-striped
  data + parity drive, RAID 5-striped data + striped parity
  RAID 30-RAID 3 stripe set, RAID 50-RAID 5 stripe set
* Supports up to eight independent arrays
* Supports variable stripe block sizee
* Supports Ultra ATA/100/66/33 drives (identical drives recommended)
* Supports hot-swap of failed drives
* Supports hot-spares 1
* Firmware support for rounding actual drive capacities to nearest
  gigabyte 2
* Data handling optimizations include tagged command queuing,
  elevator seek and load balancing
* offers transparent data recovery and rebuilds drive in
  background
* Audible alarm buzzer and alarm signal output interface
* Optimized caching alagorithm for parity calculations
  (RAID 3,5,30,50 )
* Hardware XOR accelerator
* Online array expansion-add capacity on the fly
* Supports online RAID conversions and reconstructions-change array
  levels on the fly

Specification

Hardware Interface:
* RAID controller resides within housing
* Supports Ultra 160 LVD interface for use with standard SCSI-3
  controller cards
* Subsystem appears as standard SCSI drive
* High-performance 32-bit RISC microprocessor for dedicated
  management of disk I/Os and parity calculations(100MHz i960RM)
* Hardware-assisted XOR Engine
* 32MB ECC SDRAM cache memory
* Multi-threaded command processing and disk operation
* Up to 160MB/sec burst data transfer rate
* Ultra ATA/100 interface
* SRAM battery backup
* RS232 Interface for Firmware upgrade ability

Ultra ATA 100 Interface
* Support Ultra ATA/100 specification of 100MB/sec transfers
  with CRC error-checking
* Eight independent IDE channels
* 48-bit LBA support for drives above 137GB
* Supports UDMA 5/4/3/2/1/0, DMA 2/1/0 modes
* Intelligent DMA Engine supports DMA disk drives with bus mastering
* Supports SMART-capable drives for predictive failure analysis

RAID Enclosure
* 3U Rack mountable chaassis for 19" standard rack
* Supports up to 8 ATA hard drives
* Stiff drive carrier design limits rotational vibration
* Dual Redundant 300W hot swap power supplies
* Individual drive LEDs to show drive activity and status
* Built-in LCD panel offers menu-based user interface for
  configuration and maintenance

LCD Functions:
* Identifies failed drive for replacement
* Buffer management for improved performance
* Enclosure management monitors voltage, fan/rpm, & temperature
  status
* Auto configuration and optimization
* View/Create/Delete array
* Rebuilds data on ewplacement disks in background
* Password protection for array management

Operating System Support:
* Windows , UNIX/Linux, Netware, Mac OS

Disk Array Management Software for Windows:
* Advanced GUI monitors status and manages arrays via TCP/IP
* Event logging,scheduling for disk synchronization,rebuilding
  arrays, real-time statistics for drive & cache I/O
* On screen and audible alarm in event of failed drive
* Indentifies failed drive for replacement
* Adjustable array rebuild rate
* Hard drive Write Cache enable/disable
* S.M.A.R.T. enable/disable
* Synchronization Scheduler
* Popup Windows on Critical Events
* Automatically corrects errors on the fly for data
  synchronizations
* Microsoft Windows platforms
* Password Protected Access
* Microsoft Windows NT/2000/XP Event Log compatible
* Email notification for array status changes
*Supports Enclosure Management


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