Glossary

enclosure itself is treated as simply another device on the SCSI bus. Many other leading server, storage, and RAID controller manufacturers worldwide have endorsed the SAF-TE specification. Products compliant with the SAF-TE specification will reduce the cost of managing storage enclosures, making it easier for a LAN administrator to obtain base-level fault-tolerant alert notification and status information. All Mylex RAID controllers feature SAF-TE.

SCSI

Small Computer System Interface, a technological standard that defines connections between computers and peripheral devices.

SCSI Adapters

Storage controllers for managing SCSI devices.

SCSI Drive

A disk drive equipped with a SCSI interface (sometimes referred to as a SCSI Disk). Each disk drive will be assigned a SCSI address (or SCSI ID), which is a number from 0 to 7 (0 to 15 under wide or Ultra SCSI). The SCSI address uniquely identifies the drive on the SCSI bus or channel.

SCSI Drive States

Refers to a SCSI drive’s current operational status. At any given time, a SCSI drive can be in one of five states: Ready, Online, Standby, Dead, or Rebuild.

The controller stores the state of the attached SCSI drives in its non-volatile memory. This information is retained even after power-off. Hence, if a SCSI disk is labeled “dead” in one session, it will stay in the “dead” state until a change is made either by using a system level utility or after a rebuild. Each state is described below:

Ready: A SCSI disk drive is in a “ready” state if it is powered on and is available to be configured during the current session but remains unconfigured.

Online: A SCSI disk drive is in an “online” state if is powered on, has been defined as a member of a drive group, and is operating properly.

Standby: A SCSI disk drive is in a “standby” state if it is powered on, is able to operate properly, and was NOT defined as part of any drive group.

Manual No. 775012

G-17