Hi again, We are running lustre 2.5.3 on a small system, consisting of one combined MGS/MDT and four combined OSS/OSTs. One of the OSS/OSTs has faulty hardware, and need to be replaced. The procedure I plan on using is the following. 1. Deactivate the faulty OSS. 2. Make a file-level backup of it (not much data on it). 3. Temporarily deactivate it. The manual seems clear on how to perform these steps, what I'm a bit uncertain about is how I introduce the replacement machine (which will be a complete new one). Are there certain steps I need to take into account, e.g., can will it be possible to create the new OST file system with the old ost_index? 4. Once the replacement is up, and its OST activated, the backup should be restored. In the manual it is stated that e2label should be used to set the file system label (based on the old ost_index in hex as I understand it - a bit curious on this point, since I thought that would be taken care of "automatically" (I have never done this when creating OSTs before).