Rackable Systems OmniStor 4900F Series, User Manual, Page: 126 / 196

Chapter 3 - Setup and Installation
Upgrades
112
CAUTION:
When using dual loop topologies, you will be required to install and
use volume management software.
13
Repeat steps 8 through 11 for each additional daisy-chained enclosure.
14
Power on your system, refer to “Powering On the Storage System” on page 113.
This completes the setup and cabling of this configuration.
Upgrades
At some point you may have a need to upgrade your storage system to increase the
storage capacities and/or the RAID capabilities. The OmniStor 4900F Series Storage
System provides you with this ability to meet your expanding data storage
requirements.
The Wahoo2 RAID controllers support a feature know as “drive roaming,” where
the controllers can keep track of which drive belong to which logical arrays. In the
event the drives’ enclosure is changed or the drives are moved to another enclosure
attached to the same set of controllers, the arrays will not be lost or damaged.
The upgrade process is relatively easy, refer to the “Operating Mode Configuration and
Cabling” section for the new topology for your configuration. Install the new
components, set the SES Controller Card switches, the Host I/O card(s) switches and
the Disk I/O cards jumpers for the new configuration settings, then cable the storage
system enclosures as indicated.