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

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Storage and File Systems 131
The following sections provide a brief summary of considerations for each workload listed in Table
13-2 .
File Serving (NAS)
Generally there are two types of NAS use cases: Serving files to application servers in a tiered
service oriented architecture (SOA), and serving files to end user desktops and workstations. The
former has minimal access control requirements. The latter has quite heavy access control
requirements.
Typically for serving files to application servers (traditional NAS), you would choose a file system
that is scalable and fast. Reiser and XFS would be good choices in this environment. For file serving
to end user workstations, the access control and security management capabilities of the NSS file
systems with CIFS and NCP file access protocols are important.
The NSS model does better than the other file systems for very large numbers of users. It allows for
security between users and also allows for very fine granular sharing between given users and
groups. NSS includes a visibility feature implemented in the file system that prevents unauthorized
users from even seeing subdirectory structures they don't have rights to access.
Network Printing (iPrint)
iPrint is file system agnostic. There is no noticeable difference in performance or reliability on any
of the file systems.
iFolder
Novell iFolder does not depend on a particular file system. Based on the client workload, the file
system should be chosen at the server side. Because it mostly serves user data, a file system that can
scale with a large number of files is the best suited in most deployments, making Reiser and NSS the
best bets. Novell iFolder maintains its own ACL, so having an NSS file system that supports a rich
ACL might be redundant.
GroupWise
GroupWise deals with many little files. Because only the application process is accessing the file
system, the added overhead of the rich ACL and file attributes found in NSS is redundant. The
necessary characteristics are a file system whose performance remains relatively constant regardless
File serving – end user
files Recommended Supported Supported Supported
Network printing
(iPrint) Recommended Recommended Recommended Recommended
iFolder Recommended Supported Recommended Recommended
Collaboration
(GroupWise) Recommended Supported Recommended Recommended
Cluster services Supported Supported Supported Supported
Dynamic Storage
Technology Supported Not Supported Not Supported Not Supported
Workload Type NSS File System Ext3 File System Reiser File System XFS File System