readynas 102 ethernet port dead

I think you should see directly with the support, but chances are that they will send you the exact same device (another RN102, or yours with ethernet replacement) and that plugging the disks in the same order will work (just write a number on each disk), it may even work if you invert them.
They will explain you how to update the OS version on the flash I think, so that you get the same version on flash and disks, just in case you need to reinstall the OS before the next update.

If you want access to your data during the exchange/repair process, you could plug the disks on a linux box (fedora seems to be one of the best for BTRFS), if you are using raid1 (default), you should see your content, if you use another raid you would have to remount it manually.

The warranty is three years, so you should still be covered. Use support.netgear.com, and choose "email". Normally they'd RMA a replacement NAS.

I forgot to say that you shouldn't send the disks with the NAS, but this was implied in my answer.
I also forgot to tell you that you should have a backup (or several) precisely for those situations.

xeltros wrote:
I forgot to say that you shouldn't send the disks with the NAS, but this was implied in my answer.

I'm sure support will give you instructions, just do what they tell you.

You will keep the disks, I'm not sure how they handle the trays. The replacement should be compatible (most likely identical). If for some reason its not identical, post a followup here before you insert the disks.

Just to be clear when the RMA is done (if that is what support approves) you keep the disks and the disk trays (unless there is a problem with the disk tray as well).

All the data is on the disks. The internal flash just stores the firmware.

Our firmware is designed to handle migrating to a new chassis that can run the same firmware as the dead one.

A small percentage of NAS units fail whilst under warranty and it is important to all concerned that customers have the best opportunity to recover data.

If when you migrate the array across (best to keep the drive order the same) it doesn't come up you would then ask support for advice on the next steps.

Of course backups are important. There are a range of problems that can happen. No important data should be entrusted to just one device.

If you have other issues in addition to the bad network port then depending on the severity of the issue a data recovery situation is possible which would require a data recovery contract. In extreme situations when drives are completely dead then 3rd party data recovery would be required.

However hopefully apart from the bad network ports everything is fine. Usually when the network ports fail that's all that fails.