1 Introducing Oracle ACFS and Oracle ADVM

Oracle Advanced Cluster File System (Oracle ACFS) and Oracle ASM Dynamic Volume Manager (Oracle ADVM) provide key components of storage management.

This chapter describes the components of Oracle Advanced Cluster File System (Oracle ACFS) and Oracle ASM Dynamic Volume Manager (Oracle ADVM).

This chapter provides concepts and an overview of Oracle ACFS and Oracle ADVM features with the following topics:

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Changes in Oracle ACFS and Oracle ADVM

The following are changes to Oracle Advanced Cluster File System (Oracle ACFS) and Oracle ASM Dynamic Volume Manager (Oracle ADVM) in Oracle Database 23ai.

  • Oracle ACFS encryption now provides integration with OCI Vaults. OCI Vault Master Encryption Keys can be used to encrypt the Volume Encryption Keys of encrypted ACFS file systems. This introduces an extra level to the ACFS Encryption key hierarchy and introduces key management capabilities within OCI.

  • ACFS Encryption will now allow users to migrate from OCR to OKV. ACFS users now have a centralized point for key management using Oracle Key Vault.

  • A new command, acfsutil repl switchover, provides coordinated failover services.

  • A new tool is provided to configure SSH keys management for ACFS Replication.

  • ACFS now supports an alternative transport choice for ACFS Replication which eliminates the need to maintain SSH related host and user keys.

  • PDB Snapshot Carousel on ACFS will use ACFS file based snapshots to create sparse copies.

  • ACFS replication now allows for primary clusters to replicate to standby cluster on a previous or older release.

  • The new command acfsutil plogconfig offers users a way to manage persistent logging configuration settings.

  • ACFS and AFD can now be deployed on ARM64 hardware.

These are deprecated features for Oracle ACFS 23ai.

  • The acfsutil compress command is deprecated in Oracle Database 23ai.

  • The acfsutil snap remaster command is deprecated in Oracle Database 23ai.

These are desupported features for Oracle ACFS 23ai.

  • The acfsutil repl reverse command is desupported in Oracle Database 23ai. Use repl failover or repl switchover instead.

The following are changes to Oracle Advanced Cluster File System (Oracle ACFS) and Oracle ASM Dynamic Volume Manager (Oracle ADVM) in Oracle Database 21c.

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Note:

In Oracle Automatic Storage Management (Oracle ASM) 21c, information about Oracle ASM is documented in the Oracle Automatic Storage Management Administrator's Guide.

New Features

These are new features for Oracle ACFS 21c.

  • Oracle ACFS File Based Snapshots

    Oracle ACFS file based snapshots provides the ability to create snapshots of individual Oracle ACFS files in a space efficient manner on Linux.

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  • Oracle ACFS Replication Unplanned Failover

    Oracle ACFS replication failover provides unplanned failover where the standby location assumes the role of the primary in case of failure.

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  • Oracle ACFS Automatic Shrinking

    Oracle ACFS automatic shrinking automatically shrinks an Oracle ACFS file system based on policy, providing there is enough free storage available in the volume.

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  • Oracle ACFS Mixed Sector Support

    Oracle ACFS mixed sector support enables the Linux primary and accelerator volumes of an Oracle ACFS file system to use a mix of different logical sector sizes, such as 512-bytes and 4096 bytes.

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Desupported Features

These are desupported features for Oracle ACFS 21c.

  • Desupport of Oracle ACFS Replication Version 1

    Starting with Oracle ACFS 21c, Oracle ACFS replication protocol version 1 is desupported. Replication protocol version 1 has been replaced with snapshot-based replication version 2, introduced in Oracle ACFS 12c Release 2 (12.2.0.1).

  • Desupport of Oracle ACFS Encryption on Solaris and Windows

    Starting with Oracle ACFS 21c, Oracle ACFS encryption is desupported on Solaris and Microsoft Windows operating systems.

  • Desupport of Oracle ACFS Security (Vault) and ACFS Auditing

    Starting with Oracle ACFS 21c, Oracle ACFS Security (Vault) and ACFS Auditing are desupported.

  • Desupport of Oracle ACFS on Microsoft Windows

    Starting with Oracle ACFS 21c, Oracle ACFS is desupported on Windows.

  • Desupport of Oracle ACFS Remote

    Starting with Oracle ACFS 21c, Oracle ACFS on Member Clusters (ACFS Remote) is desupported.

  • Desupport of Cluster Domain - Member Clusters

    Starting with Oracle Grid Infrastructure 21c, Member Clusters, which are part of the Oracle Cluster Domain architecture, are desupported.