Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 357
Acronym for Serial Advanced Technology Attachment. A physical storage
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rebuild rebuild rate reclaim virtual drive reconstruction rate redundancy redundant configuration revertible hot spare revision level SAS SATA The regeneration of all data to a replacement drive in a redundant virtual drive after a drive failure. A drive rebuild normally occurs without interrupting normal operations on the affected virtual drive, though some degradation of performance of the drive subsystem can occur. The percentage of central processing unit (CPU) resources devoted to rebuilding data onto a new drive after a drive in a storage configuration has failed. A method of undoing the configuration of a new virtual drive. If you highlight the virtual drive in the Configuration Wizard and click the Reclaim button, the individual drives are removed from the virtual drive configuration. The user-defined rate at which a drive group modification operation is carried out. A property of a storage configuration that prevents data from being lost when one drive fails in the configuration. A virtual drive that has redundant data on drives in the drive group that can be used to rebuild a failed drive. The redundant data can be parity data striped across multiple drives in a drive group, or it can be a complete mirrored copy of the data stored on a second drive. A redundant configuration protects the data in case a drive fails in the configuration. When you use the Replace Member procedure, after data is copied from a hot spare to a new drive, the hot spare reverts from a rebuild drive to its original hot spare status. A drive property that indicates the revision level of the drive's firmware. Acronym for Serial Attached SCSI. SAS is a serial, point-to-point, enterprise-level device interface that leverages the Small Computer System Interface (SCSI) protocol set. The SAS interface provides improved performance, simplified cabling, smaller connectors, lower pin count, and lower power requirements when compared to parallel SCSI. Acronym for Serial Advanced Technology Attachment. A physical storage interface standard. SATA is a serial link that provides point-to-point connections between devices. The thinner serial cables allow for better airflow within the system and permit smaller chassis designs. B-9
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