Sample calculation for the expected sizes of HSM file system, FSC and HSMDB

The following is an example of a calculation of space required on an HSM file system and on the file systems holding File System Catalog (FSC), and HSM Database (HSMDB), and Fast Recovery Information (FRI) files.

Sample input for calculations:

•HSM file system can store 10 million entities (files and directories)

•average size of files being migrated is 100 KB

•20% of the files are online

(online means they occupy space on the local HSM file system)

•20% of all entities on the HSM file system are directories

•the average file name length of files being migrated is 10 characters

•files have only one generation

•average number of copies per file generation amounts to two

HSM file system size calculation:

125⋅ [(afs ⋅ nf ⋅ pon) + (bks ⋅ 2 ⋅ nf)] minHSMFSsize = --------------------------------------------------------------------------------------------------

100

FSC size calculation:

First generation takes (162 for FSC) + (36 for volume index) = 198 bytes

There are no additional generations

Total FSC size = ((198 + add. attr. size) x 10000000) + (56 x 0)

HSMDB size calculation:

maxHSMDBSize = (10000000 ⋅ 12) + [10000000 ⋅ 20 ⋅ (10 + 30)] + [10000000 ⋅ 20 ⋅ (10 + 40)]

Sample results:

•minimum HSM file system size: 216-306 GB, depending on the block size (1 KB, 2 KB, 4 KB)

•maximum File System Catalog size: 453 MB

•maximum HSM Database size: 287 MB

The File System Catalog and the HSMDB together require 740 MB. That is approximately 0.3% of the size of minimum required HSM file system size for this input.

Sample calculation for the expected total size of the FRI files

The following is an example of a calculation of space required on the file system holding the Fast Recovery Information (FRI) files.

Sample input for calculation:

•total number of open FSE medium volumes in the FSE implementation is 8

•size of an FSE medium volume on tape is 5135 MB

•average size of files being migrated is 100 KB

•average file name length of files being migrated is 10 characters

•average number of files migrated together in the same migration job is 50

•block size on tape medium is 128 KB

Sample result:

• estimated maximum size of FRI files on disk: 1027 MB

Space requirements of FSE disk buffer

To determine the approximate storage space required by FSE disk buffer, you should consider the following points:

HP StorageWorks File System Extender Software installation guide for Linux 17

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HP File System Extender (FSE) manual Space requirements of FSE disk buffer
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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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