User's Guide

NOTE: Using tar or cpio is not a safe method to copy or move directories to shared volumes. In certain
circumstances file or ownership permissions may not correctly transported, especially files having the s-bit
set: /sapdb/<SID>/db/pgm/lserver and /sapdb/<SID>/db/pgm/dbmsrv. These files are important
for the vserver process ownership and they have an impact on starting the SAPDB via <SID>adm. These
files should retain the same ownership and permission settings after moving them to a shared volume.
Database and SAP instances depend on the availability of /sapdb/programs. To minimize dependencies
between otherwise unrelated systems, it is strongly recommended to use a dedicated SAPNFS package,
especially in case that the cluster has additional SAP application servers installed, more than one SAPDB is
installed or the database is configured in a separate DB package. Keeping local copies is possible, though
not recommended because of the fact that there are no administration tools that keep track of the consistency
between the local copies of these files on all the systems.
32 Planning the Storage Layout