Chapter 3 System Preparation
HPSS Installation Guide September 2002 147
Release 4.5, Revision 2

3.2.2 Encina

Configure/opt/encinalocal and /opt/encinamirror such that the contents are either mirrored or
each of these two directories is stored on separate disks. Make sure these file systems are
automatically mounted at system reboot.

3.2.3 HPSS

Configure/var/hpss as a separate file system on each HPSS server node while considering the
following:
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,
dependingon the desired size of the NFS cache) if not using separate/dedicated disks for
NFS
Make sure this file system is automatically mounted at system reboot.
3.3 Planning for Encina SFS Servers
Planthe SFS configuration in terms of number of data volumes to use, which metadata files will be
allocated to each data volume, the size of each data volume, the disks to be used, and mirroring
options:
Use the metadata sizing spreadsheetmdsizing.xls to determine final amount of SFS data
volumespace to configure. When completed, this spreadsheet should be added to the site
configurationinformation and not lost. (To obtain the metadata sizing spreadsheet, contact
your 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 move
certain SFS files or data volumes to different disks and/or nodes. The movement of data
volumesis easy because standard AIX LVM tools can be used. Splitting data volumes (i.e.,
movingan individual SFS file to another data volume) is much more costly because the SFS
filemust be exported and re-imported, which is a time-consuming task. The SFS bulk copy
featurecan be used to improve the performance for these types of operations for TX Series
4.3 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:
Name Server metadata files
Bitfile Server metadata files