Novell OPEN ENTERPRISE SERVER - CONVERSION GUIDE 12-2010, Руководство по внедрению

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128 OES 2 SP3: Planning and Implementation Guide
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The capabilities for correcting end user mistakes that are made daily (accidental overwrites,
deletes, etc.).
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Integration with collaboration tools.
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Data encryption on an individual user or group basis for compliance and security.
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Departmental Web servers and databases.
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SAN support to provide flexible storage management.
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Backup support for both desktop and server data, with rich tools for monitoring the health of
the backup system and quickly locating and repairing problems with data protection.
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Regulatory compliance. Regulatory requirements are now pushing new models of protecting
and storing employee-generated data that is in LAN systems. It is important to apply correct
regulatory requirements only on those users to which they must be applied, and then to produce
audits showing compliance.
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Highly available collaboration (e-mail) services, with rich tools to monitor, audit, and trend
resource usage.
File System Support
OES 2 offers support for four file systems: Novell Storage Services (NSS), Ext3, Reiser, and XFS.
Following is an explanation of each file system and the pros and cons of using them in the
workloads supported by OES 2.
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“Novell Storage Services (NSS)” on page 128
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“Ext2” on page 129
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“Ext3” on page 129
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“Reiser” on page 129
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“XFS” on page 129
Novell Storage Services (NSS)
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Supported only through EVMS; not currently supported through LVM.
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Best for shared LAN file serving; excellent scalability in the number of files
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Journaled
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Novell Trustee Model and NSS directory and file attributes (such as Rename Inhibit) provide
access control that is much richer than POSIX
The Novell Storage Services file system is used in NetWare 5.0 and above, and most recently is open
sourced and included in the SUSE Linux Enterprise Server (SLES) 9 SP1 Linux distribution and
later (used in the Novell Open Enterprise Server Linux product).
The NSS file system is unique in many ways, especially in its ability to manage and support shared
file services from simultaneous different file access protocols. It is designed to manage access
control (using a unique model, called the Novell Trustee Model, that scales to hundreds of thousands
of different users accessing the same storage securely) in enterprise file sharing environments.
NSS and its predecessor NWFS are the only file systems that can restrict the visibility of the
directory tree based on the user ID accessing the file system. NSS and NWFS have built-in ACL
(access control list) rights inheritance. NSS includes mature and robust features tailored for the file-
sharing environment of the largest enterprises. The file system also scales to millions of files in a