Here is some info from Avaya PSN002006u:
PSN # PSN002006u
Original publication date: 2-Feb-09. This is Issue #01, published date: 2-Feb-09.
Severity/risk level High Urgency Immediately
Name of problem Supported backup media for Modular Messaging (MM) System.
Products affected
Modular Messaging (MM) 2.0, 3.0, 3.1, 4.0 and 5.0
Problem description
For MM 2.0, 3.0, 3.1 and 4.0: There are reports of customers using backup media in the Message Storage Sever that is invalid. Avaya
supports 4.7GB, Single Sided Rewriteable Type 2 or Type 4 DVD RAM media only. The DVD-RAM disk is inside the (type 2 and
type 4) protective cartridges. We do not support using just a DVD-RAM disk without the protective cartridge. If you break the tab and
open the protective cartridge to insert a new DVD-RAM disk, this is not a supported configuration. Once the tab is broken for any
reason, you are backing up your system in a non-supported configuration and putting your system backup in jeopardy if ever needed to
recover. We have seen several errors from write protection errors, unable to format media to the backups actually working and then
failing during the restore.
From MM 5.0 on an S8730 MSS, DVD-RAM 4.7GB single-sided Media needs to be used.
Please verify the media you are using is a valid and supported configuration. In addition, please rotate your backup media regularly so
you have more than one successful backup.
Chuck
RCT Technologies