1-2
SCSI RAID Adapter – Installation & Configuration Guide
SCSI RAID PCI B4–4 Adapter Specifications
Maximum number 3
Bus architecture PCI
Bus master Yes
Data transfer rate 132 MB/second across the PCI bus
Connectors Internal 68-position 16-bit High-Density SCSI bus
External 68-position 16-bit High-Density SCSI bus
Ultra2 SCSI High Performance RAID B4–C Adapter Specifications
Maximum number 2
SCSI features Ultra 2 SCSI–3 interface,
maximum SCSI transfer rate 80MB,
16–bit SCSI bus with multi–mode SE/LVD termination, 2 SCSI
busses, 30 SCSI devices, external connector, internal connector
Battery backup 72 hours with 16 MB,
2–4 3A NiMh batteries
Bus architecture 64–bit PCI 2.1 with a maximum transfer rate of 264MBs
Power Requirements 5V +/– 5%, 50Mv peak–to–peak max, 1.87 A (single channel)
Reliability MTBF >350.000 hours
Agency Certification FCC, CE, UL, CSA, AUSTEL, SMA
Complete Kit Content PMK3755U2B Ultra 2 SCSI high performance RAID controller,
1 additional adapter for 1 SCSI LVD, external and internal
channel, optional battery backup module adds up to 72 hours of
protection for cache data in the event of a power failure
SCSI RAID Adapters
SCSI adapters are RAID–ready with integrated hardware caching.
SCSI RAID adapters provide Wide internal or external SCSI connectors and cables.
SCSI RAID adapter with four SIMM or DIMM sockets accept up to 64MB of cache (32MB on
B4–C), providing maximum performance and data integrity.
Environmental sensing capabilities are standard on SCSI RAID adapters. On–board
temperature and voltage sensors for the server, as well as storage cabinet voltage and fan
speed sensors, pass critical server management data to Storage Manager for logging and
notification to the system administrator.
SCSI Devices
SCSI devices include hard drives in hot–pluggable carriers designed for insertion in any of
the 5 1/4” device bays of the computer.
Hard Drives
2GB (B4–4 only), 4GB (B4–4 only), 9GB or 18GB Ultra Wide SCSI hard drives, enclosed in
hot–pluggable carriers, snap into any device bay in the computer.
A fault LED on each hard drive indicates a failed drive. Failed hard drives may be replaced
without interruption of normal system operation by simply pulling out the drive carrier. When
a replacement drive is inserted, SCSI RAID adapter automatically spins–up the drive and
starts the RAID rebuild process. It is not necessary to set switches or run special software.
For immediate automatic replacement of failed drives, unused drives can be designated as
Hot Spares. Upon failure of any drive in a RAID–1 or RAID–5 array, the Hot Spare will
automatically replace the failed drive and the missing data will be rebuilt onto the Hot Spare
without user intervention.