ZyXEL NAS540 User Guide - Page 348
External USB Drives, Storage, Firmware
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Chapter 21 Troubleshooting 21.7 External USB Drives The COPY LED is red. Copying files to or from from a USB device or SD card failed. The USB device or SD card may not be compatible with the NAS. Try to save the files onto a computer and then from the computer to the NAS (through the network connection). 21.8 Storage Migrating from RAID 1 to RAID 5 did not expand the storage capacity. The NAS normally expands the storage capacity by itself after rebuilding the RAID but may not if the NAS rebooted during the RAID re-build. After the re-build finishes, go to the Storage screens and select the volume or disk group and click Manage and use Expand the volume with unallocated disk space. Replacing smaller disks in a RAID 1, RAID 5, or RAID 6 with larger capacity hard disks did not expand the storage capacity. The NAS normally expands the storage capacity by itself after rebuilding the RAID but may not if the NAS rebooted during the RAID re-build. After the re-build finishes, go to the Storage screens and select the volume or disk group and click Manage and use Expand the volume with unallocated disk space. 21.9 Firmware I want to know the firmware version on the NAS. Go to the Status screen. The Firmware field shows you the current firmware version running. 348 NAS540 User's Guide