Hi Richard, Thanks for that - we are looking at the possibility that the VTL is not reading the moved data as already deduplicated and is making more unique-date tags when it shouldn't be.
In that respect, I don't think we're looking at tape label headers, more like scsi block headers? I could be wrong though. Cheers, Matthew ------ Matthew Large TSM Consultant Storage Services Barclays Wealth Technology Desk: +44 (0) 207 977 3262 Mobile: +44 (0) 7736 44 8808 Alpha Room, Ground Floor Murray House 1 Royal Mint Court London EC3N 4HH -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Richard Sims Sent: 20 June 2008 12:25 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Does reclamation rewrite data block headers? On Jun 20, 2008, at 6:37 AM, Matthew Large wrote: > Guys, > > We are having some problems with VTL machines, and the support guys > would like to find out if TSM rewrites the data headers when moving > from tape-to-tape. If you mean tape labels: I don't do VTL, but it has been standard in TSM that it requires removable media to have been previously labeled with a static, unique identity. When it moves data across volumes, the volumes retain their original identities, as is essential in tracking volumes. I've not encountered anything in my reading which indicates that VTL would be treated differently. VTLs can provide replication, where the entirety of the volume, including label, is imaged, but that's outside TSM. Richard Sims 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.
