Filter
Top Products
Chapter 4 Configuring StorNext
Windows Configuration Utilities
StorNext 3.5 Installation Guide 82
Seconds for Shared/
Non-Shared
The Attribute Flush Time parameters control
the length of time attributes are held on the
client before they are flushed back to the FSM
(unless there is an explicit attribute request
from the FSM).
The default values are 30 seconds for non-
shared files (Attribute Flush Time, non
shared), and 2 seconds for shared files
(Attribute Flush Time, shared).
Setting these parameters lower will greatly
increase the amount of metadata traffic
between clients and the FSM. However, in
circumstances where files are frequently
shared on the SAN, setting the Attribute Flush
Time Shared can result in other clients seeing
size updates more frequently if a file is being
written on one client and read on another.
A value of zero is invalid, and will result in
using the default setting.
Delay Atime Updates
When this box is checked, the file system
delays Atime (access time) updates when
reading a file to the time when the file is
closed. This cuts down on FSM metadata
updates at the expense of coherency.
Low Water Mark
Metadata Caches contain non-data
information such as file names, sizes, update
times, etc.
Tuning the low and high water marks and the
frequency of purge passes can help certain
large mix applications.
High Water Mark
Max. Entries
Purge Period
(Seconds)
Minimum Directory
Cache Size
This option sets the size of the directory cache.
Directory entries are cached on the client to
reduce client-FSM communications during
directory reads.
The default value is 10 MB.
Field / Button Description