2.12 NAME

98

This file provides data for incremental recovery after power outage or similar in- convenient situations. If this file does not exist then recovery will start from file ID 1. When a recovery from scratch is required, this file has to be deleted. At the end of successful recovery operation this file is deleted.

Recovery will be done to native FS (Ext3 on Linux systems, NTFS on Windows systems).

File state after recovery:

1.After the recovery of HSM FS I–node information will be inconsistent with old data in FSC and FRI. I–nodes of the files are not the same as before recovery.

2.File access and create time will be set properly, other file time attributes may be not set during recovery.

3.File will be offline.

4.Directory may not have proper change, modify, and access time set. This depends on files that are restored after directory.

LIMITATIONS

1.If NSC does not exist for particular FSE partition then HSM FS recovery from NSC is not possible. This could occur after upgrade from old version of FSE in case that NSC is not recreated for an existing FSE partition and some disaster happens.

2.It is not recommended to start recovery of HSM FS in case that NSC database is not fully recreated after upgrade of FSE system. In that case results will not be as expected.

3.Symbolic links cannot be recovered because they are not written to tape (no migration of symbolic link to FSE media).

4.Windows Alternate Data Streams (ADS) will be not fully supported for re- covery (recall of ADS is not supported yet). The names of ADS will be stored in NSC, but not data, therefore they will not be recoverable until they can be recalled from tape.

HP StorageWorks File System Extender Software CLI reference

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HP File System Extender (FSE) manual Limitations
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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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