Ask the Community
Groups
PHD - disks failed to rehydrate - Connect IT Community | Kaseya
<main> <article class="userContent"> <h2 data-id="issue"><strong>ISSUE</strong></h2> <p>Warn PHDVBA Thu Jun 01 21:00:00 2017 2 of 4 disks failed to rehydrate" in PHD virtual backup exporter.</p> <h2 data-id="resolution"><strong>RESOLUTION</strong></h2> <p></p> <div><b>1) Problem with the disks on the NFS server.</b></div> <div>Please run a hardware check to verify there are not sector problems or bad blocks that need to be addressed.<br><br><b> 2) The hard linking of the backups is not complete.</b><br>Are these exports running very soon after the backups complete? Are they running on an NFS that has low IOPS or does not handle Hard Links?<br><br><b> 3) Some blocks were not written correctly during the backup drives.</b><br>In this case, disable CBT, and set the Verify option in the backup job to "FULL" and run a new set of backups. This should "heal" any bad blocks from previous backups. Then try a new export.<br> </div> <div>1) Please review KB 4186 titled, "<a rel="nofollow" href="/home/leaving?allowTrusted=1&target=https%3A%2F%2Funitrends-support.zendesk.com%2Fhc%2Fen-us%2Farticles%2F360013265418">How do I export my backups to tape in PHDVB 6.5?</a>?", just in case you are missing a step or have reached a known limitation.<br><br>2) Check the storage and verify there is enough space to perform the re-hydration. Increase space if there is not enough space. Once this is good, continue to step 3 below. <br><br>3) Stop the Export/Archive/Replication process (we do not want it to process the copy job).<br><br>4) Run a new 1-Time backup using the FULL VERIFY option. This is the beginning of the correction, and you<i> WILL</i> get the error one more time (this is expeced at this time). <br><br>5) Set the backup Job back to NONE for the FULL VERIFY, and run the regular backup. This <i>WILL</i> generate a Warning <b>AND</b> will find and fix the bad/missing blocks. <br><br>6) Run another regular backup. You can <i><b>now </b></i>set the Export/Archive/Replication to process. This will begin the final process of correcting the data.</div> <div> </div> <div> </div> <h2 data-id="notes"><strong>NOTES</strong></h2> <p>HINT! > > Please review KB 1729 titled <a rel="nofollow" href="/home/leaving?allowTrusted=1&target=https%3A%2F%2Funitrends-support.zendesk.com%2Fhc%2Fen-us%2Farticles%2F360013265198">Verifying Backups and Restores</a> for instructions on how to perform the Full Verify and other options.</p> </article> </main>