EUROLOGIC SANbloc MAN-FC2000-RAID, Installation Manual

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SFF Small Form Factor. Refers to documents controlled by the SFF
committee which is made up of a consortium of companies whose
purpose is to define the form factor and pinouts of 3.5-inch disk
drives
Simplex See single controller mode
Simplex-only control-
ler A controller whose firmware is not duplex-enabled in the firm-
ware configuration header
Single controller mode A single controller attached to a set of drives that offers RAID
functionality without the fault tolerance of dual-active mode
System drive A storage region created out of physical disk drives. One to eight
system drives compose the controller’s customer data storage
area. Each system drive has the attributes of capacity, RAID level,
cache write policy, and LUN affinity
SD System Drive
System drive affinity System drive affinity is an attribute assigned to a system drive that
determines whether that system drive is accessible via all host
ports on a single controller, accessible via a single host port on a
single controller, or accessible via no host ports
Surviving controller A controller that has determined that its partner controller in a
dual-active pair has failed and has assumed the duties of both con-
trollers. An indication of a surviving controller is stored in
NVRAM
UPS Uninterruptible Power Supply. A large battery back-up module
that detects the loss of AC power and provides power to the sys-
tem
Term Description