LSI SCSI 320-0 Configuration page 35

Using View/Add Configuration,
Step
5 Press <F10> to configure logical drives. The logical drive configuration screen appears,
as shown below:
The logical drive that is currently being configured and any existing logical drives are
displayed. The column headings are:
LD
RAID
Size
#Stripes
StrpSz
Drive-State
6 Set the RAID level for the logical drive. Highlight RAID and press <Enter>. The
available RAID levels for the current logical drive appear. Select a RAID level and press
<Enter> to confirm. See the MegaRAID Hardware Guide for your board for an
explanation of the RAID levels.
7 Set the spanning mode for the current logical drive. Highlight Span and press <Enter>.
The choices are:
CanSpan Array spanning is enabled for the current logical drive. The logical drive can
occupy space in more than one array.
NoSpan Array spanning is disabled for the current logical drive. The logical drive can
occupy space in only one array.
For two arrays to be spannable, they must have the same stripe width (they must contain
the same number of physical drives) and they must be consecutively numbered. For
example, assuming Array 2 contains four disk drives, it can be spanned only with Array 1
and/or Array 3, and only if Arrays 1 and 3 also contain four disk drives. If the two criteria
for spanning are met, MegaRAID automatically activates spanning. If the criteria are not
met, the Span setting makes no difference for the current logical drive. Highlight a
spanning option and press <Enter>.
Configuring RAID 10, RAID 30, or RAID 50 Logical Drives
Configure RAID 10 by spanning two contiguous RAID 1 logical drives. The RAID 1
logical drives must have the same stripe size.
Configure RAID 30 by spanning two contiguous RAID 3 logical drives. The RAID 3
logical drives must have the same stripe size.
Configure RAID 50 by spanning two contiguous RAID 5 logical drives. The RAID 5
logical drives must have the same stripe size.
Continued
Action
The logical drive number
The RAID level
The logical drive size
The number of stripes (physical drives) in the associated
physical array
The stripe size
The state of the logical drive
Chapter 2 MegaRAID Configuration Utility
Cont'd
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