Acer PCI to Ultra SCSI RAID Controllers DAC960PG Bedienungsanleitung PDF herunterladen (Seite 77)

Glossary

Manual No. 775012 G-19

reported, conservative cache is enabled and all system drives are switched to

write-through cache. Primarily used in fibre enclosures.

SIMM

Single In-line Memory Module, RAM packed on a small circuit board with a

defined edge connector. Two SIMMs are required for a 64-bit memory path

on a Pentium processor. See also DIMM.

SISL

See SCSI Interrupt Steering Logic (SISL).

SMART

Self-Monitoring Analysis and Reporting Technology, the industry standard

reliability prediction indicator for both the ATA/IDE and SCSI hard disk

drives. Hard disk drives with SMART offer early warning of some hard disk

failures so critical data can be protected.

SNMP

Simple Network Management Protocol, the protocol governing network

management: for monitoring network devices and their functions.

Standard Disk Drive

This term refers to a hard disk drive with SCSI, IDE, or other interface,

attached to the host system through a standard disk controller.

Standby Replacement of Disks

See also Hot Spare. One of the most important features the RAID controller

provides to achieve automatic, non-stop service with a high degree of fault-

tolerance. The controller automatically carries out the rebuild operation

when a SCSI disk drive fails and both of the following conditions are true:

A “standby” SCSI disk drive of identical size is found attached to the same

controller;

All of the system drives that are dependent on the failed disk are redundant

system drives, e.g., RAID 1, RAID 3, RAID 5, and RAID 0+1.

Note: The standby rebuild will only happen on the

SAME DAC960 controller,

never across DAC960 controllers.

During the automatic rebuild process, system activity continues as normal.

System performance may degrade slightly during the rebuild process.

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Acer PCI to Ultra SCSI RAID Controllers DAC960PG Bedienungsanleitung Seite 77