Specifications

For information on upgrading to, or downgrading from, 2.4.1.0, refer to Installing
ArubaOS 2.4.1.0—Prerequisites.
Before you Change your Switch’s Image
All Aruba Mobility Controllers store critical configuration data on an onboard Compact
Flash memory module. In order to maintain the reliability of your Aruba WLAN
network, Aruba recommends the following general best practices with respect to the
use of your Aruba switch and its Compact Flash memory:
Backing up Critical Data
It is important to back up frequently all critical configuration data and files on
Compact Flash file system to an off-switch external server or mass storage facility. At
the very least, you should include the following files in these frequent off-switch
backups:
 Configuration Data
 WMS Database
 Local User Database
 Licensing Database
 Floor Plan JPEGs
 Customer Captive Portal Pages
 Customer x.509 Certificates
Managing Flash Memory
Be careful not to exceed the size of the flash file system. For example, loading
multiple large building JPEGs for RF Plan can consume the flash space quickly.
Warning messages will alert you that the file system is running out of space
whenever any write attempt to Flash occurs once there is 5Mbytes or less of space
remaining.
Other tasks which are sensitive to insufficient Flash file system space include:
 Using the internal database - DHCP lease/renew information etc. is also
stored on Flash. If the file system is full, DHCP addresses will not be
distributed/renewed.
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