We are having a similar problem, with LTO4's in a Scalar500 - scratch tapes were failing to complete any mounting process then going into a Private status 'to prevent re-access' as per ANR8778W.
The problems started when we had two devclasses for LTO, one with DRIVEncryption set to ON (LTO_ENCRYPT), and the other NO (LTO). Since changing the LTO devclass to Allow, checking the tapes out and labelling then in again with a checkin of 'Scratch' seems to alleviated the ongoing status change. We are still getting the i/o errors on the volumes reporting KEY=7 (write protect) but the usual 'i/o error reading label', '<vol> could not be mounted' and 'scratch vol changed to Private to prevent re-access' have gone. Have you been fiddling with Drive Encrypted device classes? ------ Matthew Large TSM Consultant -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of John C Dury Sent: 02 April 2008 22:57 To: [email protected] Subject: [ADSM-L] multiple tapes being detected as WRITE PROTECTED in SL500 library We have an SL500 tape library with 50 tapes in it and 4 IBM Ultrium LTO4 drives. One of the drives consistently is detecting tapes that get mounted to it as WRITE PROTECTED. We have replaced the fiber between the drive and the DS-4900 SAN switch and also moved it into a new port in the SAN switch in case the GBIC was causing the problem. This all started with the same drive getting multiple MEDIA FAULT errors on the same LTO4 drive and marking tapes as READ ONLY. Sun/STK has since replaced the same drive and now the drive in the same slot on the SL500 is getting the WRITE PROTECTED errors on the tapes that are mounted in it. Could it be the new drive has a bad sensor in it? I'm just not sure what else we can replace at this point to fix this. And if that is the case, are these drives (IBM Ultrium) really that unreliable and get errors this often? Or could it be something with the SL500? This is a new tape library with new drives that is only a few months old. This is our production system and having it mark 10-12 tapes a night as unavailable is quite a pain when we only have 50 tapes in the whole library. Thanks, John Barclays Wealth is the wealth management division of Barclays Bank PLC. This email may relate to or be sent from other members of the Barclays Group. The availability of products and services may be limited by the applicable laws and regulations in certain jurisdictions. The Barclays Group does not normally accept or offer business instructions via internet email. Any action that you might take upon this message might be at your own risk. This email and any attachments are confidential and intended solely for the addressee and may also be privileged or exempt from disclosure under applicable law. If you are not the addressee, or have received this email in error, please notify the sender immediately, delete it from your system and do not copy, disclose or otherwise act upon any part of this email or its attachments. Internet communications are not guaranteed to be secure or virus-free. The Barclays Group does not accept responsibility for any loss arising from unauthorised access to, or interference with, any Internet communications by any third party, or from the transmission of any viruses. Replies to this email may be monitored by the Barclays Group for operational or business reasons. Any opinion or other information in this email or its attachments that does not relate to the business of the Barclays Group is personal to the sender and is not given or endorsed by the Barclays Group. Barclays Bank PLC. Registered in England and Wales (registered no. 1026167). Registered Office: 1 Churchill Place, London, E14 5HP, United Kingdom. Barclays Bank PLC is authorised and regulated by the Financial Services Authority.
