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diff --git a/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/backup/SimpleBackupPurge.java b/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/backup/SimpleBackupPurge.java
new file mode 100644
index 000000000..47a04cfb3
--- /dev/null
+++ b/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/backup/SimpleBackupPurge.java
@@ -0,0 +1,72 @@
+package org.argeo.server.backup;
+
+import java.text.DateFormat;
+import java.util.Date;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.commons.vfs.FileObject;
+import org.apache.commons.vfs.FileSystemManager;
+import org.apache.commons.vfs.FileSystemOptions;
+import org.apache.commons.vfs.Selectors;
+import org.argeo.ArgeoException;
+import org.joda.time.DateTime;
+import org.joda.time.Period;
+
+/** Simple backup purge which keeps backups only for a given number of days */
+public class SimpleBackupPurge implements BackupPurge {
+	private final static Log log = LogFactory.getLog(SimpleBackupPurge.class);
+
+	private Integer daysKept = 5;
+
+	@Override
+	public void purge(FileSystemManager fileSystemManager, String base,
+			String name, DateFormat dateFormat, FileSystemOptions opts) {
+		try {
+			DateTime nowDt = new DateTime();
+			FileObject baseFo = fileSystemManager.resolveFile(
+					base + '/' + name, opts);
+
+			SortedMap<DateTime, FileObject> toDelete = new TreeMap<DateTime, FileObject>();
+			int backupCount = 0;
+
+			// scan backups an list those which should be deleted
+			for (FileObject backupFo : baseFo.getChildren()) {
+				String backupName = backupFo.getName().getBaseName();
+				Date backupDate = dateFormat.parse(backupName);
+				backupCount++;
+
+				DateTime backupDt = new DateTime(backupDate.getTime());
+				Period sinceThen = new Period(backupDt, nowDt);
+				// int days = sinceThen.getDays();
+				int days = sinceThen.getMinutes();
+				if (days > daysKept) {
+					toDelete.put(backupDt, backupFo);
+				}
+			}
+
+			if (toDelete.size() != 0 && toDelete.size() == backupCount) {
+				// all backups would be deleted
+				// but we want to keep at least one
+				DateTime lastBackupDt = toDelete.firstKey();
+				FileObject keptFo = toDelete.remove(lastBackupDt);
+				log.warn("Backup " + keptFo
+						+ " kept although it is older than " + daysKept
+						+ " days.");
+			}
+
+			// delete old backups
+			for (FileObject backupFo : toDelete.values()) {
+				backupFo.delete(Selectors.SELECT_ALL);
+				if (log.isDebugEnabled())
+					log.debug("Deleted backup " + backupFo);
+			}
+		} catch (Exception e) {
+			throw new ArgeoException("Could not purge previous backups", e);
+		}
+
+	}
+
+}