User's Manual

hp StorageWorks File System Extender User Guide 211
Description Files are not migrated because the file system ran out of free space.
Explanation The FSE implementation stops migrating files if a file system for FSE databases and system files
runs out of free space.
Linux specific
Mount point of the file system for FSE databases and system files is /var/opt/fse.
Windows specific
Mount point of the file system for FSE databases and system files is %InstallPath%\var.
The value of %InstallPath% depends on the choice made in the FSE installation process. It
defaults to C:\Program Files\Hewlett-Packard\FSE.
Workaround Under special circumstances, such as when there are many small files or many changes of file
properties, Fast Recovery Information (FRI) requires a large amount of disk space. You need to
dedicate enough disk space for the belonging file system for FSE databases and system files to
prevent it from running out of free space.
IMPORTANT: This is potentially dangerous since it may result in corrupt FRI files. You can
prevent this by calculating the expected FRI size and dedicating enough disk space for the file
system holding temporary FRI data files.
Use the following formula to calculate the expected FRI size:
where the meaning of the parameters is:
Sfri ..... estimated maximum size of FRI files on disk.
Nv ..... total number of open FSE medium volumes in the FSE implementation. This number
is determined by the number of configured FSE media pools that contain media with
migrated files.
Sv ..... size of an FSE medium volume on tape.
Sf ..... average size of files being migrated.
Lf ..... average filename length of files being migrated.
Nm ..... average number of files migrated in the same migration job.
Tbks ..... block size on tape medium. Note that this only applies if all FSE media pools are
configured with the same block size.
[x] ..... the value in the brackets rounded up to the nearest integer.
Sfri
Nv Sv× 350 Lf+()Nm Tbks⁄×[]×
Sf Nm Tbks⁄×[]
-------------------------------------------------------------------------------------------=