Product manual

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VTrak A-Class Product Manual Promise Technologies
fIle system mAnAgement
A primary function of the VTrak A-Class Storage Appliance is to create and maintain a distributed le system (or
systems) for users and applications on client computers connected to the SAN. For convenience the le system
or systems collectively will be referred to variously as the SAN File System, or simply File System throughout this
document. The File System is a fundamental component of the shared high-speed expandable storage network
managed by the VTrak A-Class Storage Appliance. File System management includes management of metadata
les and le system journal data. These les are stored on a LUN Group dedicated for this purpose. Metadata is
information such as which specic parts of which disks are used to store a particular le and whether the le is
being accessed. The journal data is a record of le system transactions used to help ensure the integrity of les
in the event of a failure.
This section describes how to use Web PAM PROe to create and manage the SAN File System. The material is
organized and presented according to the File System menu used. File System management and functions related
to the SAN File System are done using these menus:
• “FileSystem-Detail”
• “FileSystem-Storage”
• “FileSystem-QuotaManagement”
• “FileSystem-Folder”
These are all located in the File System menu directory, click on the File System link at the top of the menu
interface to view the tabbed submenus.
In addition, some background information is provided about some of the conguration options available to
administrators when creating a le system. Background information is presented in these sections:
• “PlanningandCreationoftheFileSystem”
• “WhatisMetadata?”
• “AdvancedCongurationOptionsfortheFileSystem”