Operation fine-tuning options

The following tables list the values that the variable can take:

Option value	Description

none	Do not leave any disk buffer files (default).

corrupt	Leave only corrupted disk buffer files on disk.

all	Leave all disk buffer files on disk.

Example

export HSM_DEBUG_DISKBUF=corrupt

HSM_USE_MAM

This debugging variable cannot be used with the fsesystem --enable-dbgcommand. It can only be specified in the trace.cfg file.

The HSM_USE_MAM option is designed to ease debugging related to Medium Auxiliary Memory (MAM) chips, which are integrated in the LTO Ultrium tape cartridges. You can prevent FSE from using the MAM functionality by specifying the option as follows:

export HSM_USE_MAM=no

HSM_MEDIA_LOGGING

This debugging variable cannot be used with the fsesystem --enable-dbgcommand. It can only be specified in the trace.cfg file.

Specifying this variable, you can prevent FSE from logging the actions performed on the FSE media, which are normally logged into the FSE event log. Use the following line to disable media logging:

export HSM_MEDIA_LOGGING=no

NOTE: Excessive logging may result in an FSE system performance becoming noticeably degraded. It may be a good idea to disable media logging when you expect that many media operations will be logged in a short period of time.

HSM_CALL_TIMEOUT

This debugging variable cannot be used with the fsesystem --enable-dbgcommand. It can only be specified in the trace.cfg file.

In the FSE interprocess communication, the default timeout period for all omniORB (CORBA) calls is 2 days. For various reasons, you may want to change the default period to a different value. The timeout value must be specified in milliseconds. Value 0 means no timeout.

Example

export HSM_CALL_TIMEOUT=300000

HSM_PT_DIRECT

This debugging variable cannot be used with the fsesystem --enable-dbgcommand. It can only be specified in the trace.cfg file.

By default, the FSE implementation uses direct SCSI pass-through mode for controlling SCSI devices. Some SCSI and Fibre Channel host bus adapters (HBAs) are not compatible with this mode, which may result in problems using the attached devices. The variable HSM_PT_DIRECT in trace.cfg allows such HBAs to be used in the FSE implementation. You can switch communication with devices from direct SCSI pass-through mode to buffered SCSI pass-through mode.

HP StorageWorks File System Extender Software user guide 279

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.

HP File System Extender (FSE) manual Operation fine-tuning options

Models: File System Extender (FSE)

Example