3Ware 9550SXU-12 User Guide - Page 331
self-tests include Upgrade UDMA mode and Check SMART Thresholds.
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• Rebuild task schedule. The specification for when rebuilding, may occur, including start time and duration. • Rebuild a unit. To generate data on a new drive after it is put into service to replace a failed drive in a fault tolerant unit (for example, RAID 1, 10, 5, 6, or 50). • Redundancy. Duplication of data on another drive or drives, so that it is protected in the event of a drive failure. • Remove a drive. The process of making a drive unavailable to the controller. • Remove a unit. The process of making a unit unavailable to the controller and the operating system. After a unit is removed it can be hot swapped out of the system. This is sometimes referred to as exporting a unit. • RLM (RAID Level Migration). The process of using an existing unit of one or more drives and converting it to a new RAID type without having to delete the original unit. For example, converting a single disk to a mirrored disk or converting a RAID 0 unit to a RAID 5 unit. • Self-test. A test that can be performed on a scheduled basis. Available self-tests include Upgrade UDMA mode and Check SMART Thresholds. • Stagger time. The delay between drive groups that will spin up, at one time, on a particular controller. • SAS. SAS (Serial Attached SCSI) is a serial communication protocol for storage devices. The SAS protocol includes support for SAS and SATA devices. • SAS address. Each SAS device (SAS drives, controllers, and expanders) has a worldwide unique 64-bit SAS address. Also known as World Wide Number (WWN). SATA drives do not have a WWN and are identified by a VPort ID. • SAS device. SAS devices include SAS drives, controllers, and any expanders present in the SAS domain. Each SAS device has a unique 64bit World Wide Number (WWN). SATA drives do not have a WWN and are identified by their VPort IDs • SAS domain. The SAS domain includes all SAS and SATA devices that are connected to the 9690SA controller, either directly or through expanders. • SES (SCSI Enclosure Services). The SES protocol allows the 9690SA RAID controller to manage and report the state of the power supplies, cooling devices, displays, indicators, individual drives, and other nonSCSI elements installed in an enclosure. For the 9650SE controller, the enclosure support is CCU-based with SAFTE (SCSI Accessed Fault-Tolerant Enclosure) protocol support. www.3ware.com 319