Thanks Richard, I suspected as much - even within the same server looking at the same data in different storage pools (i.e. fully synchronised primary and copy stgpools) I see the same number of objects but a different logical space value reported.
/DMc -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Richard Sims Sent: 21 April 2009 13:45 To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Verifying EXPORT NODE is successful with Q OCC - LOGICAL SPACE OCCUPIED (MB) differences? David - The Admin Ref manual description of the Physical and Logical Space report element from Query OCCupancy is superficial, leading the customer to believe that the Logical value is just the amount of space occupied by client files. According to info I've seen, logical space also includes headers housing control information for each file, such as magic numbers, CRC info, segment numbering, server ID, etc. The size of the header info can vary as TSM evolves, and so may differ across TSM releases. The header size can be seen in the output of the SHow INVObject command for a given ObjectID. Richard Sims http://people.bu.edu/rbs No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.12.0/2068 - Release Date: 19/04/2009 20:04 No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.12.0/2068 - Release Date: 19/04/2009 20:04