Server-free backup
Encyclopedia
IBM introduced Server-Free backup with IBM Tivoli Storage Manager
IBM Tivoli Storage Manager
IBM Tivoli Storage Manager is a centralized, policy-based, enterprise class, data backup and recovery package. The software enables the user to insert objects not only via backup, but also through space management and archive tools...

 5.1 in 2002 for Windows 2000
Windows 2000
Windows 2000 is a line of operating systems produced by Microsoft for use on personal computers, business desktops, laptops, and servers. Windows 2000 was released to manufacturing on 15 December 1999 and launched to retail on 17 February 2000. It is the successor to Windows NT 4.0, and is the...

 servers only.
  • Server-Free backup functionality (with DATAMOVER TYPE=SCSI) were included in IBM Tivoli Storage Manager
    IBM Tivoli Storage Manager
    IBM Tivoli Storage Manager is a centralized, policy-based, enterprise class, data backup and recovery package. The software enables the user to insert objects not only via backup, but also through space management and archive tools...

    version 5.1, 5.2, and 5.3, but not in 5.4 or later, but (DATAMOVER TYPE=NAS) are supported in 5.4 and later.


Server-Free data movement uses the SCSI-3 EXTENDED COPY command (3) and are carried out by a data mover device that must exists on the SAN, and it is the data mover device that is responsible for copying the data, either from a SAN-attached (client-owned) disk to a SAN-attached tape drive (server-owned), or vice versa.

How to use Server-Free backup was well documented with examples in the IBM Redbook "Tivoli Storage Manager Version 5.1 Technical Guide", by the authors Bjorn Roden, Steven Pemberton, Nigel Bentley, Michael Dann and project leader Barry Kadleck at the IBM Almaden Research Center.

Please also refer to the IBM Tivoli Storage Manager Administrator's Guide, "Chapter 7. Setting Up Server-Free Data Movement".

SCSI-3 Extended Copy

From the http://www.t10.org/intro.htmT10 working group, in the "Working Draft SCSI Primary Commands - 4 (SPC-4)" on page 103: "The EXTENDED COPY command provides a means to copy data from one set of logical units to another set of logical units or to the same set of logical units. The entity within a SCSI device that receives and performs the EXTENDED COPY command is called the copy manager. The copy manager is responsible for copying data from the source devices to the destination devices. The copy source and destination devices are logical units that may reside in different SCSI devices or the same SCSI device."

External links

For more information, please refer to:
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