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v If the drive is rebuilding, online, or reports a PFA, set drive state to defunct
v Verify physical drive
Understanding physical drive capacity and unusable capacity: Physical drive capacities
influence the way you create arrays. Drives in the array can be of different
capacities (1 GB or 2 GB, for example), but the ServeRAID controller treats them as
if they all have the capacity of the smallest physical drive.
For example, if you group three 1 GB drives and one 2 GB drive into an array, the
total capacity of the array is 1 GB times 4, or 4 GB, not the 5 GB physically
available. The remaining space on the 2 GB drive is unusable capacity.
For the ServeRAID-8i, ServeRAID-8k/8k-l, and and ServeRAID-7t
controllers, the remaining space is usable capacity. That is, you can use the
remaining space to define another logical drive; see Example: Usable and unusable
capacity.
Conversely, if you add a smaller drive to an array of larger drives, such as a 1 GB
drive to a group containing three 2 GB drives, the total capacity of that array is 4
GB, not the 7 GB physically available. Therefore, the optimal way to create arrays
is to use physical drives that have the same capacity.
A hot-spare drive also must be at least as large as the smallest drive in the array.
More information
v Example: Usable and unusable capacity
v Example: Total disk capacity
v Understanding creating basic arrays
Clearing
a disk drive: Use this action to remove all data from a disk drive:
1. In the Physical devices view, click
(online physical drive).
2. Right-click Clear.
3. Click Yes to confirm.
More information
v Identify physical drive
Verifying
physical drives: Use this action to check a physical drive for inconsistent
or bad data. The Verify action examines each sector and block on the disk to
ensure that it is readable. It does not repair the drive if bad data is found.
To verify a physical drive:
1. In the Physical devices view, click
(physical drive).
2. Right-click Verify.
3. Click Yes to verify the drive.
Note: To check the progress of the operation, switch to text view.
More
information
v Understanding synchronizing logical drives
138 ServeRAID Manager Installation and User's Guide