Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 192
Table 5.28, Add RAID 0 - driver
![]() |
View all Lenovo ThinkServer RD240 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 192 highlights
Table 5.28 Add RAID 0, 1, 5, or 6 Configuration (Cont.) Description Adds a RAID level 0, 1, 5, or 6 configuration to a specified controller. Even if no configuration is present, you have the option to write the configuration to the controller. Note that RAID 1 supports up to 32 drives in a single span of 16 drive groups. RAID 1 requires an even number of drives, as data from one drive is mirrored to the other drive in each RAID 1 drive group. -Rx[E0:S0,...]: Specifies the RAID level and the drive enclosure/slot numbers to construct a drive group. -WT (Write through), WB (Write back): Selects write policy. -NORA (No read ahead), RA (Read ahead), ADRA (Adaptive read ahead): Selects read policy. -Cached, -Direct: Selects cache policy. [{CachedBadBBU|NoCachedBadBBU }]: Specifies whether to use write cache when the BBU is bad. -szXXXXXXXX: Specifies the capacity for the virtual drive, where XXXX is a decimal number of Mbytes. However, the actual capacity of the virtual drive can be smaller, because the driver requires the number of blocks from the drives in each virtual drive to be aligned to the stripe size. If multiple size options are specified, CT configures the virtual drives in the order of the options entered in the command line. The configuration of a particular virtual drive will fail if the remaining capacity of the drive group is too small to configure the virtual drive with the specified capacity. This option can also be used to create a configuration on the free space available in the drive group. -strpszM: Specifies the stripe size, where the stripe size values are 8, 16, 32, 64, 128, 256, 512, or 1024 KBytes. Hsp[E5:S5,...]: Creates hot spares when you create the configuration. The new hot spares will be dedicated to the virtual drive used in creating the configuration. This option does not allow you to create global hot spares. To create global hot spares, you must use the -PdHsp command with proper subcommands. You can also use this option to create a configuration on the free space available in the virtual drive. You can specify which free slot should be used by specifying the -AfterLdX: This command is optional. By default, the application uses the first free slot available in the virtual drive. This option is valid only if the virtual drive is already used for configuration. 5-22 MegaRAID Command Tool
![](/manual_guide/products/lenovo-thinkserver-rd230-megaraid-sas-software-user-guide-7a323ec/192.png)