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

Glossary129