this post was submitted on 07 Jul 2025
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It's A Digital Disease!

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The original post: /r/datahoarder by /u/jamiecruickshank on 2025-07-06 19:28:12.

Hey all,

Hoping someone here might be able to help shed some light on an LTO-7 drive issue I’ve hit. I’ve got an HP LTO-7 tape drive that was working perfectly a couple months ago—I backed up my whole NAS, no issues at all. After that, I put the enclosure in a cupboard for a bit of a break.

Took it out this week to run another backup and… nothing. It won’t start properly and gives me a POST error. Plugged it into my Windows machine and ran the HP diagnostics, and it’s coming up with an EC5 error. Tape head life still shows 99% remaining in HP Library & Tape Tools, so I don’t think the heads are worn out.

Looking through the logs, the main things that keep popping up are:

  • RAS_FSC_MR_OPEN_HEAD_READERS_TEST
  • LOD_FSC_SRV_NOT_DETECT_LANDMARK_ERROR
  • RAS_FSC_OPEN_RDR_TEST_FAIL

For context, I’m an electronics engineer, so I’m fine with getting my hands dirty if it comes to component-level repair or replacing a part—I just don’t have a clue what these cryptic error messages are actually pointing to. Is there a known fix, or am I looking at a dead drive?

Would really appreciate any pointers, troubleshooting steps, or even service manuals if anyone has them. Thanks!

https://preview.redd.it/y4xbn3iidabf1.png?width=1159&format=png&auto=webp&s=8e864ff928fb560a0f927a9617f00e130791b1b7

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