https://wiki.anunna.wur.nl/index.php?action=history&feed=atom&title=Backup_Policy 2026-09-29T06:34:26Z Revision history for this page on the wiki MediaWiki 1.45.3 https://wiki.anunna.wur.nl/index.php?title=Backup_Policy&diff=3194&oldid=prev 2026-09-01T15:05:06Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 15:05, 1 September 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l5">Line 5:</td> <td colspan="2" class="diff-lineno">Line 5:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>! Storage !! Backed up? !! Notes</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>! Storage !! Backed up? !! Notes</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>| [[Home Directory|/home]] || Yes <del style="font-weight: bold; text-decoration: none;">— to tape, restorable from roughly </del>a <del style="font-weight: bold; text-decoration: none;">week of history. </del>|| Good for configuration files and small results you can't afford to lose.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>| [[Home Directory|/home]] || Yes<ins style="font-weight: bold; text-decoration: none;">. With </ins>a <ins style="font-weight: bold; text-decoration: none;">managed backup solution that allows file-level restore </ins>|| Good for configuration files and small results you can't afford to lose.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>|-</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| [[Compute Storage|/lustre/nobackup]] || No. || The default Lustre area; cheaper, but lost data cannot be recovered. Keep your own copies of anything important.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>| [[Compute Storage|/lustre/nobackup]] || No. || The default Lustre area; cheaper, but lost data cannot be recovered. Keep your own copies of anything important.</div></td></tr> </table>

Prins089 https://wiki.anunna.wur.nl/index.php?title=Backup_Policy&diff=2807&oldid=prev 2026-06-18T11:43:27Z

<p>IA migration §6: split/synthesize Filesystems backup info into Backup Policy (via create-page on MediaWiki MCP Server)</p> <p><b>New page</b></p><div>Different storage areas on Anunna come with very different backup guarantees. Knowing which is which is essential: some areas are never backed up, and data lost there cannot be recovered. This page summarises the situation; the page for each storage area gives more context.<br /> <br /> {| class=&quot;wikitable&quot;<br /> |-<br /> ! Storage !! Backed up? !! Notes<br /> |-<br /> | [[Home Directory|/home]] || Yes — to tape, restorable from roughly a week of history. || Good for configuration files and small results you can&#039;t afford to lose.<br /> |-<br /> | [[Compute Storage|/lustre/nobackup]] || No. || The default Lustre area; cheaper, but lost data cannot be recovered. Keep your own copies of anything important.<br /> |-<br /> | [[Compute Storage|/lustre/backup]] || Yes — a second copy on a separate machine. || A disaster-recovery copy, not a versioned backup. It may help revert a mistake if you report it very quickly, but there is no guarantee.<br /> |-<br /> | [[Compute Storage|/lustre/scratch]] || No. || Temporary area; files may be purged automatically (typically after 30 days).<br /> |-<br /> | [[Archival Storage|/archive]] || Yes — to tape, restorable from roughly a week of history (same schedule as /home). || Warm storage on the login nodes, for WUR users.<br /> |}<br /> <br /> == Recommendations ==<br /> <br /> * Treat &lt;code&gt;/lustre/nobackup&lt;/code&gt; and &lt;code&gt;/lustre/scratch&lt;/code&gt; as expendable. Anything you cannot regenerate should also live somewhere that is backed up, or be archived to tape — see [[Archival Storage]].<br /> * A &quot;backup&quot; tier protects against hardware disaster, not against your own mistakes. If you delete something by accident, report it immediately; recovery is best-effort.<br /> <br /> == See also ==<br /> * [[Storage Systems Overview]]<br /> * [[Home Directory]]<br /> * [[Compute Storage]]<br /> * [[Archival Storage]]<br /> * [[Quotas]]</div>

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