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RAID Controller
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Option 1:
Single 4-channel fibre and 2-channel SCSI RAID controller and LCD display
Option 2:
Dual-redundant 4-channel fibre RAID controllers and LCD display
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RAID Level Support
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RAID 0, 1, 3, 5, and 6 (0 + 1)
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Channel Upgrade Card
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Optional 2 channel daughtercard upgrade for RAID controller
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Processor
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64 bit RISC processor
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On-board memory
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32MB to 1GB cache memory
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LCD display
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For local setup and system diagnostics
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Terminal interface
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RS-232C terminal interface to set controller features, RAID configuration, and run diagnostics
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Fibre features
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 Copper FC-AL channels
Up to 125 drives per channel
100MB/second transfer rate per channel
Dynamic load-balancing for FC loop ports A and B
Full duplex send/receive payload buffers cable lengths: 30m (copper), 10km (optical)
SAN mapping support
Redundancy loop support
Loop ID aliases
Optional fibre bypass circuit on dual-redundant controller
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SAN functions
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LUN filtering, DMEP for global file system, SAN backup - remote replication and local snapshot backup, redundant loop balancing
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Cache
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Optional intelligent read-ahead/write-back cache
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Redundancy
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Active-active redundancy capability with synchronised write-back cache feature
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Firmware
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Flash memory for easy firmware upgrades
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Failed drive rebuilding
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Hot spare with automatic background rebuild, hot-swap and on-line background rebuild
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Global spare drive
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Dedicated and global spare drive support
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Products & Solutions 
R1000S rack