Veritas™ File System 5.0.1 Administrator's Guide

Both the <MIN> and <MAX> elements require Flags attributes to direct their
operation.
For <MIN>, the following Flags attributes values may be specified:
The time of last access must be greater than the specified interval.gt
The time of last access must be equal to the specified interval.eq
The time of last access must be greater than or equal to the specified
interval.
gteq
For <MAX>, the following Flags attributes values may be specified.
The time of last access must be less than the specified interval.lt
The time of last access must be less than or equal to the specified
interval.
lteq
Including a <MIN> element in a <WHEN> clause causes VxFS to relocate files to
which the rule applies that have been inactive for longer than the specified interval.
Such a rule would typically be used to relocate inactive files to less expensive
storage tiers. Conversely, including <MAX> causes files accessed within the specified
interval to be relocated. It would typically be used to move inactive files against
which activity had recommenced to higher performance or more reliable storage.
Including both <MIN> and <MAX> causes VxFS to relocate files whose access age
lies between the two.
The modification age relocation criterion, <MODAGE>, is similar to access age, except
that files' POSIX mtime values are used in computations. You would typically
specify the <MODAGE> criterion to cause relocation of recently modified files to
higher performance or more reliable storage tiers in anticipation that the files
would be accessed recurrently in the near future.
The file size relocation criterion, <SIZE>, causes files to be relocated if the files
are larger or smaller than the values specified in the <MIN> and <MAX> relocation
criteria, respectively, at the time that the fsppadm enforce command was issued.
Specifying both criteria causes VxFS to schedule relocation for files whose sizes
lie between the two. Using the Units attribute, threshold file sizes may be specified
in the following units:
Bytesbytes
KilobytesKB
MegabytesMB
161Dynamic Storage Tiering
File placement policy rules