In all other cases it will be assumed that the medium has already been verified by the previous operation.

CAUTION: Data might get written to the wrong medium if it is exchanged manually and if an operation that sends medium change notification from SCSI subsystem to the FSE implementation has been performed. It is therefore hazardous to set this variable to “no” or “false” and perform manual drive operations later on.

Example

export HSM_BEA_VERIFY_HEADER=yes

HSM_BEA_COMPRESSION

This variable controls whether FSE uses the data compression functionality of the supported LTO tape drives. By default, this functionality is enabled and the data are written to the tape drives in the compressed form. Note that use of compression may decrease the tape drive performance, but enables storage of approximately twice as much data as with compression disabled. HP recommends that you leave compression enabled.

Example

export HSM_BEA_COMPRESSION=off

Debugging HSM file system filter

To see the messages or debug trace information that the HSM file system filter left among the kernel messages, proceed as follows.

Linux specific

On an FSE client, to see the messages or debug trace information the HSM file system filter left among the kernel messages, run the command:

# dmesg grep hsmfs

You can also redirect the dmesg buffer to a file by performing the following:

1.Add the following lines to the file /etc/syslog.conf:

# Log all kernel messages to file

kern.*

/var/log/kernel

2.Restart the syslogd daemon:

#kill -HUPSyslogdProcessID

The file /var/log/kernel will track the complete dmesg history.

NOTE: If HSM file system generates too many kernel messages, they may not all be tracked in the file and some of them may be lost.

For more information on logging system messages, see the sysklogd man page.

Windows specific

To see these messages on an the FSE client, follow the steps below:

1.In Windows Control Panel, double-click Administrative Tools, and then double-click Event Viewer.

2.Click System Log and under the Source column look for hsmfs source.

Debugging FSE backup and restore processes

To debug FSE backup and restore processes, use the following procedure:

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HP File System Extender (FSE) manual Debugging HSM file system filter, Debugging FSE backup and restore processes
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File System Extender (FSE) specifications

HP File System Extender (FSE) is a sophisticated solution designed to optimize data storage management for enterprises that deal with large volumes of unstructured data. This technology addresses the challenges of data growth and the need for effective data retention strategies, enabling organizations to store and manage their information more efficiently.

One of the main features of HP FSE is its ability to intelligently migrate data between primary and secondary storage. By utilizing policies that determine when to move infrequently accessed files to lower-cost storage environments, FSE helps reduce the strain on primary storage systems and saves on costs associated with high-performance storage solutions. This tiered approach to data management ensures that organizations can access the data they need quickly while still maintaining an efficient overall storage architecture.

Another notable characteristic of HP FSE is its seamless integration with existing storage infrastructures. The solution works with a variety of storage systems, allowing organizations to utilize their current investments without the need for significant changes to their infrastructure. This interoperability is powered by advanced technologies that facilitate data migration and retrieval, ensuring a smooth transition for organizations looking to optimize their storage strategies.

Additionally, HP FSE is equipped with robust reporting and analytics capabilities. This functionality provides organizations with insights into their storage usage, helping them understand data patterns and optimize their storage environments accordingly. By having visibility into which files are accessed most frequently and which are rarely used, organizations can make informed decisions on data retention policies and storage management.

Security is paramount in data management, and HP FSE addresses this concern by implementing advanced data protection features. This includes data encryption, secure access controls, and compliance with industry regulations, ensuring that sensitive information is safeguarded throughout its lifecycle.

Overall, HP File System Extender is a comprehensive data storage solution that combines intelligent data management, seamless integration, insightful analytics, and robust security features. By leveraging these capabilities, organizations can efficiently manage their unstructured data, lower costs, and enhance operational efficiency, making it an invaluable tool in today’s data-driven landscape.
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