diff --git a/src/main/asciidoc/_chapters/backup_restore.adoc b/src/main/asciidoc/_chapters/backup_restore.adoc
index c2beca0b9aee..d05067a46c81 100644
--- a/src/main/asciidoc/_chapters/backup_restore.adoc
+++ b/src/main/asciidoc/_chapters/backup_restore.adoc
@@ -578,33 +578,60 @@ $ hbase backup describe backupId_1467823988425
 // hbase backup delete
 
 [[br.delete.backup]]
-=== Deleting a Backup Image
+=== Deleting Backup Images
 
-This command can be used to delete a backup image which is no longer needed.
+The `hbase backup delete` command deletes backup images that are no longer needed.
+
+[[br.delete.backup.syntax]]
+==== Syntax
 
 [source]
 ----
-$ hbase backup delete <backup_id>
+$ hbase backup delete -l <backup_id1,backup_id2,...>
+$ hbase backup delete -k <days>
 ----
 
-[[br.delete.backup.positional.cli.arguments]]
-==== Positional Command-Line Arguments
-
-_backup_id_::
-  The ID to the backup image which should be deleted.
-
 [[br.delete.backup.named.cli.arguments]]
 ==== Named Command-Line Arguments
 
-None.
+_-l <backup_id1,backup_id2,...>_::
+Comma-separated list of backup IDs to delete.
+
+_-k <days>_::
+Deletes all backup images completed more than the specified number of days ago.
+
+NOTE: These options are **mutually exclusive**. Only one of `-l` or `-k` may be used at a time.
 
 [[br.delete.backup.example]]
-==== Example usage
+==== Example Usage
+
+Delete specific backup images by ID:
 
 [source]
 ----
-$ hbase backup delete backupId_1467823988425
+$ hbase backup delete -l backupId_1467823988425,backupId_1467824989999
+----
+
+Delete all backup images older than 30 days:
+
+[source]
 ----
+$ hbase backup delete -k 30
+----
+
+[CAUTION]
+====
+* Deleting a backup may affect all following incremental backups (in the same backup root) up to 
+  the next full backup. For example, if you take a full backup every 2 weeks and 
+  daily incremental backups, running `hbase backup delete -k 7` when the full backup is older than 
+  7 days will effectively remove the data for all subsequent incremental backups.
+  The backup IDs may still be listed, but their data will be gone.
+
+* If the most recent backup is an incremental backup and you delete it, 
+  you should run a **full backup** next.
+  Running another incremental backup immediately after may result in missing data in the 
+  backup image. (See link:https://issues.apache.org/jira/browse/HBASE-28084[HBASE-28084])
+====
 
 // hbase backup repair