Dell PowerVault MD3260i CLI Guide - Page 116

Parameter cacheReadPrefetch segmentSize usageHint dssPreAllocate securityType Description top and 1 for the RAID controller module on the bottom when viewed from the rear of the enclosure. If you do not specify an owner, the RAID controller module firmware determines the owner. NOTE: The owner parameter defines which RAID controller module owns the virtual disk. The preferred RAID controller module ownership of a virtual disk is the RAID controller module that currently owns the disk group. The setting to turn on or turn off cache read prefetch. To turn on cache read prefetch, set this parameter to TRUE. To turn off cache read prefetch, set this parameter to FALSE. Amount of data (in kilobytes) that the RAID controller module writes on a single physical disk in a virtual disk before writing data on the next physical disk. Valid values are 8, 16, 32, 64, 128, 256, or 512. For information about the segmentSize parameter, see Using The Auto Configure Command. The settings for both the cacheReadPrefetch parameter and the segmentSize parameter should be the default values. The default values are based on the typical I/O usage pattern of the application that is using the virtual disk. Valid values are fileSystem, dataBase, or multiMedia. The setting to make sure that reserve capacity is allocated for future segment size increases. The default value is TRUE. The setting to specify the security level when creating the disk groups and all associated virtual disks. • none-The disk group and virtual disks are not secure. • capable-The disk group and virtual disks are capable of having security set, but security has not been enabled. • enabled-The disk group and virtual disks have security enabled. For information about securityType, see Security Type. Create RAID Virtual Disk (Manual Physical Disk Select) This command creates a new disk group and virtual disk, and enables you to specify the physical disks for the virtual disk. 116