diff --git a/ui/scripts/docs.js b/ui/scripts/docs.js
index 73c713f6f06..b7f2668d824 100755
--- a/ui/scripts/docs.js
+++ b/ui/scripts/docs.js
@@ -336,7 +336,7 @@ cloudStack.docs = {
         externalLink: ''
     },
     helpDiskOfferingDiskSize: {
-        desc: 'Appears only if Custom Disk Size is not selected. Define the volume size in GB.',
+        desc: 'Appears only if Custom Disk Size is not selected. Define the volume size in GB. (1GB = 1,073,741,824 bytes)',
         externalLink: ''
     },
     helpDiskOfferingDiskBytesReadRate: {
@@ -1019,6 +1019,10 @@ cloudStack.docs = {
         desc: 'Choose the characteristics of the storage.',
         externalLink: ''
     },
+    helpVolumeSizeGb: {
+        desc: 'Volume size in GB (1GB = 1,073,741,824 bytes)',
+        externalLink: ''
+    },
     // Add VPC
     helpVPCName: {
         desc: 'A name for the new VPC',
diff --git a/ui/scripts/storage.js b/ui/scripts/storage.js
index 7b4015328a4..ffef1924786 100644
--- a/ui/scripts/storage.js
+++ b/ui/scripts/storage.js
@@ -169,6 +169,7 @@
                                     ,
                                     diskSize: {
                                         label: 'label.disk.size.gb',
+                                        docID: 'helpVolumeSizeGb',
                                         validation: {
                                             required: true,
                                             number: true