Veritas Storage Foundation Cross-Platform Data Sharing 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

Chapter
1
Overview of CDS
General concepts
CDS provides you with a foundation for moving data between different systems
within a heterogeneous environment. The machines may be running HP-UX,
AIX, Linux or the Solaris
TM
operating system (OS), and they may all have direct
access to physical devices holding data. CDS allows Symantec’s Veritas products
and applications to access data storage independently of the operating system
platform, enabling them to work transparently in heterogeneous environments.
The following levels in the device hierarchy, from disk through file system, must
provide support for CDS to be used:
CDS utilizes a new disk type (auto:cdsdisk). To effect data sharing, VxVM
supports a new disk group attribute (cds) and also supports different OS block
sizes.
Note: CDS allows data volumes and their contents to be easily migrated between
heterogeneous systems. It does not enable concurrent access from different
types of platform unless such access is supported at all levels that are required.
End-user applications Application level.
Veritas™ File System (VxFS) File system level.
Veritas Volume Manager (VxVM) Volume level.
Operating system Device level