ADIC 3 Running the Pre-Installation Script

StorNext 3.0 Upgrade Guide
Document 6-01620-04 Rev A
March 2007
Running the Pre-Installation Script 5
Running the Pre-Installation Script 0
The StorNext pre-installation script (snPreInstall) is included on the StorNext
installation CD. When you run snPreInstall, you are prompted for information
about your system. The pre-installation script uses this information to estimate
the amount of local disk space required for SNFS and SNSM support directories.
In addition, the script recommends the optimal locations for support directories.
StorNext uses five directories to store application support information. These
directories are stored locally on the metadata controller, except for the Backup
directory, which is stored on the managed file system.
The StorNext support directories are described in Table 1.
Table 1 StorNext Support
Directories
Before You Begin 0Before running the pre-installation script, be prepared to answer the following
questions:
• Is this an upgrade installation?
• What local file systems can be used to store support information?
• What version of StorNext will be installed?
• What is the maximum number of directories expected (in millions)?
• What is the maximum number of files expected (in millions)?
• How many copies will be stored for each file?
• How many versions will be retained for each file?
Support Directory Description
Database
/adic/database
Records information about where and how data files
are stored.
Journal
/adic/database_jnl
Records changes made to the database.
Mapping
/adic/mapping_dir
Contains index information that enables quick
searches on the file system.
Metadata
/adic/database_meta
Stores metadata dumps (backups of file metadata).
Backup
/backup
Contains configuration files and support data
required for disaster recovery.
Note: Keep in mind that storage needs typically grow rapidly. Consider
increasing the maximum number of expected directories and files by a
factor of 2.5x to ensure room for future growth.