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– You must create the individual logical drives before you create a
RAID Volume. Use the Configuration wizard to create the logical
drives; then, run the Configuration wizard again to create the RAID
Volume.
– When you create a RAID Volume, the ServeRAID Manager replaces
the individual logical drives with a single RAID Volume icon in the
Logical devices view; then, it reports the logical drives as deleted in
the event viewer. The event message is normal and does not indicate a
loss of data.
More information
v Understanding RAID technology
v Understanding stripe-unit size
v Selecting a RAID level
v RAID level-0
v RAID level-1
v RAID level-1 Enhanced
v RAID level-5
v RAID level-5 Enhanced
v RAID level-5EE
v RAID level-6
v RAID level-x0
Creating a simple volume
Use this action to create a simple volume. A simple volume is a single disk drive
or segment used for storage in a RAID system; it is not redundant.
Complete the following steps to create a simple volume:
1. In the Physical devices view, click
(online physical drive).
2. Right-click Create simple volume.
3. Click Yes to confirm.
More information
v Understanding RAID technology
Selecting a RAID level and tuning performance
Disk arrays are used to improve performance and reliability. The amount of
improvement depends on the application programs that you run on the server and
the RAID levels that you assign to the logical drive.
Each RAID level provides different levels of fault-tolerance (data redundancy),
utilization of physical drive capacity, and read and write performance. In addition,
the RAID levels differ in regard to the minimum and maximum number of
physical drives that are supported.
When selecting a RAID level for your system, consider the following factors.
Note: Not all RAID levels are supported by all ServeRAID controllers.
RAID level
Data redun-
dancy
Physical
drive
capacity
utili- zation
Read perfor-
mance
Write perfor-
mance
Built-in
spare drive
Min.
number of
drives
Max.
number of
drives
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48 ServeRAID Manager Installation and User's Guide