(DP) Support Tip: Bypass the filesystem buffer cache to speed up backups.

If OB2VXDIRECT=1 is set in the enviroment of a HP-UX, Linux or Solaris client when the vbda, sapback or saprest runs, Data Protector will call ioctl() to set VX_DIRECT to bypass the file system buffer cache. If the file system supports this option, serial read() performance of a file generally improves. By default this is enabled on Solaris clients but has to be explicitly enabled on HP-UX and Linux clients. To enable, set the following in the .omnirc file.

OB2VXDIRECT=1

Or export the variable setting to the environment if running brbackup/brrestore or vbda manually.

export OB2VXDIRECT=1