You can set the noatime option to control whether the access time is updated when reading files and directories.
In OES 2 SP1, NSS provides the /atime and /noatime options for Linux. For information, see Section A.22, noatime and atime Commands.
In OES SP2 and later, NSS provides noatime and nodiratime support for the Linux open(2) API command, mount command, and the /etc/fstab configuration file. Backup applications can take advantage of this option to back up a file without altering its access time. For information, see Section A.23, noatime and nodiratime Support for Linux open, mount, nfsmount, and /etc/fstab.