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Automate data migration

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HSM software dependencies
All HSM products have varying degrees of dependencies with different parts of your storage infrastructure, and you'll most likely need to modify settings in your backup server software, network and app servers. For example, Veritas NetBackup Storage Migrator for Unix 6.0 requires Veritas NetBackup 6.0 server. You must install the central Storage Migrator management interface on a Veritas NetBackup server and then install the Storage Migrator client on the hosts. Even the Storage Migrator host agent has prerequisites, as it only supports hosts with HP-UX or Solaris OSes with a current version of the Veritas file system (VxFS).

The presence of an advanced file system like VxFS is a requirement for a number of HSM products, as newer versions of Unix file systems include the Data Storage Management API (XDSM) formerly known as DMAPI. XDSM is a standard API that allows the HSM product to interface with a file system using common commands that control access to files and notify apps about the operations performed on files.

Like Veritas NetBackup Storage Migrator, IBM's TSM HSM products--TSM for Space Management and HSM for Windows--take advantage of these XDSM features and support IBM's own General Parallel File System (GPFS) in addition to VxFS. GPFS is a separate product, however, and it needs to be purchased, installed and configured on AIX and Linux systems for the HSM product to work.

SGI's InfiniteStorage

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DMF is also dependent on a XDSM-enabled file system. But unlike some other HSM products, InfiniteStorage DMF requires users to install the XFS or CXFS file system on host systems prior to installing the DMF HSM software product. While SGI offers its CXFS file system for most major OSes, it's a product that's purchased and licensed separately from its InfiniteStorage DMF software.

This was first published in November 2006

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