LSI MegaRAID Express 500 - Manual (Page 143)

Glossary 129
Glossary, Continued
SCSI ID A SCSI physical drive can be in one of these states:
• Online - Powered-on and operational.
• Hot Spare - Powered-on stand-by disk drive, ready for use if an online
disk fails.
• Rebuild - A disk drive to which one or more logical drives is restoring
data.
• Not Responding - The disk drive is not present, is not powered-on, or
has failed.
Service Provider The Service Provider (SP) is a program that resides in the desktop system or server and is
responsible for all DMI activities. This layer collects management information from
products (whether system hardware, peripherals or software) stores that information in the
DMI database and passes it to management applications as requested.
SNMP Simple Network Management Protocol, the most widely used protocol for communication
management information between the managed elements of a network and a network
manager. SNMP focuses primarily on the network backbone. The Internet standard
protocol that manages nodes on an Internet Protocol (IP) network.
Spanning Array spanning by a logical drive combines storage space in two arrays of disk drives into
a single, contiguous storage space in a logical drive. MegaRAID logical drives can span
consecutively numbered arrays that each consist of the same number of disk drives. Array
spanning promotes RAID levels 1, 3, and 5 to RAID levels 10, 30, and 50, respectively.
See also Disk Spanning and Spanning.
Cont’d