Controller Based WLANs

How much /flash and free memory do I need for a local file upgrade with ArubaOS

by on ‎07-01-2014 05:07 PM

Products and Software: This article applies to Aruba 3000 and 600 Series and M3 controllers and ArubaOS and later.


Starting with ArubaOS, /flash must be equal to or greater than 75 MB and free memory must be greater than 75 MB. If not enough memory exists, this error message is displayed: System has low free memory and/or low free disk space.


Issue the 'show memory' command. This applies to upgrade via all methods local file, ftp, tftp, scp.


(Aruba620) #show memory

Memory (Kb): total: 387976, used: 299100, free: 88876


Issue the 'show storage' command:

(Aruba620) #show storage

Filesystem Size Used Available Use% Mounted on

/dev/mtdblock11 156.0M 69.4M 86.6M 45% /flash

none 00.0M 3.8M 296.2M 1% /tmp

/dev/mtdblock9 50.0M 24.5M 25.5M 49% /mnt/img0

/dev/mtdblock10 50.0M 24.5M 25.5M 49% /mnt/img1


If not enough /flash or free memory exists, delete files from the file system before you attempt a local file upgrade. Issue the 'dir' command to list all files (or use WebUI > Maintenance > Files). Delete all unnecessary files including crash files and logs.tar file. To ensure that all temporary (crash) files are removed, create a tar file of crash logs and then remove the crash.tar file from the controller.


Delete unwanted files by navigating to WebUI Maintenance > File > Delete Files, reload the controller to recover free memory, and try to upload the image again. If it fails again, try other upgrade options.

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