Working with an External Storage Device

Note

V2110 (MS Hyper-V platform) does not support flash functionality (upgrade, backup, restore, storage, etc.).

You can use a USB device to do the following maintenance tasks:

• Installing and upgrading the software: You can install or upgrade the wireless software from a USB device.
• Backing up the system: You can store the existing image of the wireless software on a USB device as a backup while upgrading the software.
• Restoring the software: You can restore the backed up wireless software from a USB device.
• Storing configuration backup files: You can export and import configuration backup to/from flash, as well as transfer configuration backup file between flash, local storage and remote servers.
• Storing exception traffic files: You can store captured exception traffic on the USB device. For example, DHCP, OSPF, TFTP traffic.

The USB device is automatically made available to the GUI/CLI (mounted) by the controller when inserted in the device slot. After the flash device is mounted, the GUI/CLI shows the content of the flash device for the related operation, such as backup and upgrade. To manually unmount or remount an already inserted flash device, use the controller GUI:

• Mount the flash device – By mounting the flash device, you make the flash device that has been inserted into the controller available for use.
• Unmount the flash device – By unmounting the flash device, you make the flash device that has been inserted into the controller unavailable for use.
  

  Caution

  You must always unmount the flash device via the controller GUI before removing it from the controller. Failure to do so may corrupt the files on the flash device. Always wear an ESD wristband when inserting or removing a flash device.
• Delete files stored on the flash device – You can also delete files stored on a USB device. By deleting the files, you can create space on the USB device. For more information, see Deleting Files from a Flash Device.

Flash Device File System Format

All flash devices used with the controller must be formatted in FAT32. Only the first partition of the flash device is used by the controller.

Controller software can operate (backup, restore, delete, etc.) only with files located in the root directory on the flash drives. In other words, it cannot operate with files located under directories.

Wireles controllers equipped with multiple USB connectors support only one USB device at a time, regardless of what USB connector the device is connected to. If you connect a second USB device while the first is already connected, the system will return an error.

Warning

Ensure all flash devices used with the controller are formatted to be non-bootable. Otherwise, the controller may experience difficulties when rebooting if connected to a bootable formatted flash device.