Avago Technologies MegaRAID Fast Path Software - Manual (Page 253)

LSI Corporation Confidential | July 2011 Page 253
MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool | Virtual Drive-Related Options
5.14.12 Clear the LDBBM Table Entries Use the command in the following table to clear the LDBBM table entries.
5.14.13 Display the List of Virtual
Drives with Preserved Cache Use the command in the following table to display the list of virtual drives that have
preserved cache. Preserved cache is cache that remains in the controller cache after a
drive goes offline or missing and that has not been saved to a drive yet. You can reboot
and manage the preserved cache.
5.14.14 Discard the Preserved Cache of
a Virtual Drives Use the command in the following table to discard the preserved cache of a virtual
drives.
5.14.15 Expand a Virtual Drive Use the command in the following table to expand a virtual drive.
Table 93: Clear the LDBBM Table Entries
Convention MegaCli -LDBBMClr -Lx|-L0,1,2,...|-Lall
-aN|-a0,1,2|-aALL
Description Clears the LDBBM table entries for the virtual drives on the selected
adapters.
Table 94: Display the List of Virtual Drives with Preserved Cache
Convention MegaCli -GetPreservedCacheList -aN|-a0,1,2|-aALL
Description Displays the list of virtual drives that have preserved cache.
Table 95: Discard the Preserved Cache of a Virtual Drives
Convention MegaCli -DiscardPreservedCache -Lx|-L0,1,2|-Lall
-force -aN|-a0,1,2|-aALL
Description Discard the preserved cache of the virtual drives.
Table 96: Discard the Preserved Cache of a Virtual Drives
Convention MegaCli -LdExpansion -pN -dontExpandArray
-Lx|-L0,1,2|-Lall -aN|-a0,1,2|-aALL
Description Expands the virtual drive within the existing array or beyond the size of the
existing array if you replace the drives with larger drives.
-pN : Denotes the percentage of the array to use to expand the virtual drive.
N ranges from 0 to 100 percent. For example, -p30 indicates expansion up
to 30 percent of available array size.
-dontExpandArray : Expand a virtual drive within the array, even when
there is room to expand the array.
For example, you have created a 5-GB RAID 1 virtual drive with two
30-GBdrives. The array size is 30 GB and the virtual drive size is 5 GB. If you
replace the two 30-GB, drives with two 60-GB drives, the array size is still 30
GB (because of previous configuration). You have two options:
1. Expand the virtual drive within the array.
Use the -dontExpandArra option to expand the virtual drive up to 30
GB.
2. Expand the virtual drive beyond the existing array size
Use the -pN option to expand the virtual drive beyond 30 GB and up to
60 GB (the size of the replacement drives).