User guide

56 Configuring a Storage Solution
 NOTE
You cannot mix SAS and SATA disk drives in the same disk array. If you have a mix of SATA and
SAS drives in the enclosure, each array comprised of either SATA or SAS drive types must have a
dedicated spare assigned of like type. For example, if you have an array with SAS drives and one
with SATA drives you must have two hot spares one assigned for SAS and one for SATA for the hot
spare feature to work and to have complete fault tolerance.
1. To enable this feature, click the Advanced Settings button on the Main screen Tool Bar. The
Advanced Settings window will open.
2. Place the mouse pointer on the check box next to the Auto Spare parameter and click to place
a check mark enabling the feature.
Figure 37. Advanced Settings Screen
3. Click the APPLY button and click the CLOSE button on the confirmation window when it
appears. Then click the CLOSE button on the Advanced Settings window.
Create the Logical Drive
To complete the process of configuring your storage solution, you will need to create one or more
logical drives. During creation you will assign a LUN to the logical drive, this presents the logical drive
to the host operating system. The SR1202 RAID Controller supports up to 512 logical drives.
A logical drive is defined or created from regions of an array, a whole array, or a combination of
regions of different array(s) that can be made available as a single disk to one or more host systems.
If you are creating a logical drive greater than 2 TB, please refer to your operating and file system
documentation to verify it supports such sizes.
You may wish to avoid choosing combinations of a region from one array and from another array to
create your logical drive. This will reduce data fragmentation.