Fujitsu IRF-1D series, User Manual

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Chapter 1 - Getting Started
RAID Controllers
15
The core processor of the controller is based on an Intel XScale™ RISC processor
running at 600 MHz. The processor has integrated instructions and data caches
that allow for the most frequent instructions to be executed without having to
access external memory. Coupled with the micro kernel, it processes commands
and I/O’s at extremely high rates.
The processor’s companion chip implements dual independent 64-bit 66MHz PCI
busses. Devices on these busses have independent access to the shared 512 MB
of SDRAM. Also, an integrated XOR accelerator is included for RAID 5 or 50
parity generation.
The imageRAID Controller disk drive interface uses QLogic ISP 2312 dual Fibre
Channel controllers which takes full advantage of the dual fibre loops on each
disk drive. The controller’s host interface also uses QLogic ISP 2312 dual Fibre
Channel controllers which provides two independent ports for host connectivity.
Each port can operate at either 1 Gb/sec or 2 Gb/sec, and the controller will
automatically detect the correct rate. The ports are sometimes referred to as “Host
Loops.”
Located on the controller face plate are Activity, Link and Status LEDs. Refer to
the table below and the illustration on the following page for descriptions for
each LED.
NOTE: The “TXRX-LNK” and “1K-10/100” LEDs are provisions for future options.
RAID Controller Face Plate LEDs
PWR
Indicates power is applied.
OVR CUR
Indicates controller over current condition e5V.
PRTNR
If on, it will indicate that the partner controller has failed.
TXRX - LNK
Option for future enhancement.
1K - 10/100
Option for future enhancement.
imageRAID.book Page 15 Tuesday, September 23, 2003 4:08 PM