Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 358
Examples include Optimal and Degraded., SCSI device, serial no., strip size, striping, subvendor ID
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SCSI device type serial no. strip size stripe size striping subvendor ID uncorrectable error count vendor ID vendor info virtual drive virtual drive state A drive property indicating the type of the device, such as drive. A controller property indicating the manufacturer-assigned serial number. The portion of a stripe that resides on a single drive in the drive group. A virtual drive property indicating the length of the interleaved data segments that the RAID controller writes across multiple drives, not including parity drives. For example, consider a stripe that contains 64 KB of drive space and has 16 KB of data residing on each drive in the stripe. In this case, the stripe size is 64 KB and the strip size is 16 KB. The user can select the stripe size. A technique used to write data across all drives in a virtual drive. Each stripe consists of consecutive virtual drive data addresses that are mapped in fixed-size units to each drive in the virtual drive using a sequential pattern. For example, if the virtual drive includes five drives, the stripe writes data to drives one through five without repeating any of the drives. The amount of space consumed by a stripe is the same on each drive. Striping by itself does not provide data redundancy. Striping in combination with parity does provide data redundancy. A controller property that lists additional vendor ID information about the controller. A controller property that lists the number of uncorrectable errors detected on drives connected to the controller. If the error count reaches a certain level, a drive will be marked as failed. A controller property indicating the vendor-assigned ID number of the controller. A drive property listing the name of the vendor of the drive. A storage unit created by a RAID controller from one or more drives. Although a virtual drive may be created from several drives, it is seen by the operating system as a single drive. Depending on the RAID level used, the virtual drive may retain redundant data in case of a drive failure. A virtual drive property indicating the condition of the virtual drive. Examples include Optimal and Degraded. B-10 Glossary
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