Scsi Drive States; Scsi Adapters - Mylex PCI to Ultra SCSI RAID Controllers DAC960PG Installation Manual

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 defined as part of any drive group.
NOT
Manual No. 775012 G-17