Chapter 3 System PreparationHPSS Installation Guide September 2002 147Release 4.5, Revision 23.2.2 EncinaConfigure /opt/encinalocal and /opt/encinamirror such that the contents are either mirrored oreach of these two directories is stored on separate disks. Make sure these file systems areautomatically mounted at system reboot.3.2.3 HPSSConfigure /var/hpss as a separate file system on each HPSS server node while considering thefollowing:• Any node needs a minimum of 30 MB• The node that will run the HPSS Log Daemon will need an additional 100 MB• Any node running an HPSS NFS Daemon will need an additional 200 MB (or more,depending on the desired size of the NFS cache) if not using separate/dedicated disks forNFS• Make sure this file system is automatically mounted at system reboot.3.3 Planning for Encina SFS ServersPlan the SFS configuration in terms of number of data volumes to use, which metadata files will beallocated to each data volume, the size of each data volume, the disks to be used, and mirroringoptions:• Use the metadata sizing spreadsheet mdsizing.xls to determine final amount of SFS datavolume space to configure. When completed, this spreadsheet should be added to the siteconfiguration information and not lost. (To obtain the metadata sizing spreadsheet, contactyour customer support representative.)• Use multiple data volumes as opposed to one large volume• Keep in mind that in the future as the size of HPSS grows, it may be necessary to movecertain SFS files or data volumes to different disks and/or nodes. The movement of datavolumes is easy because standard AIX LVM tools can be used. Splitting data volumes (i.e.,moving an individual SFS file to another data volume) is much more costly because the SFSfile must be exported and re-imported, which is a time-consuming task. The SFS bulk copyfeature can be used to improve the performance for these types of operations for TX Series4.3 and later.• Make sure the larger SFS files are on different data volumes (e.g., tape storage segments,NS objects, BFS bitfiles, etc.)• An initial starting point for allocating SFS files to data volumes is as follows:u Name Server metadata filesu Bitfile Server metadata files
