82 Sun Fire V890 Server Owner’s Guide • September 2004
About the FC-AL Disk Backplanes
All Sun Fire V890 servers include a single FC-AL disk backplane with connections
for up to six disks. An optional expansion backplane may be installed above the base
backplane to accommodate up to six additional disks.
The FC-AL backplane accepts low-profile (1.0-inch) dual-ported FC-AL disk drives.
Each disk drive connects to the backplane via a standard 40-pin single connector
attachment (SCA) interface. Incorporating all power and signal connections into a
single, blind-mating connector, SCA technology makes it easy to add or remove disk
drives from the system. Disks using SCA connectors provide higher availability and
better serviceability than disks using other types of connectors.
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