Summary of changes
This topic summarizes changes to the IBM Storage Scale licensed program and the IBM Storage Scale library. Within each topic, these markers ( ) surrounding text or illustrations indicate technical changes or additions that are made to the previous edition of the information.
Summary of changes
for IBM Storage Scale 5.1.8
as updated, July 2023
This release of the IBM
Storage Scale licensed program and the IBM
Storage Scale library includes the following improvements. All
improvements are available after an upgrade, unless otherwise specified.for IBM Storage Scale 5.1.8
as updated, July 2023
- Commands, data types, and programming APIs
- Messages
- Stabilized, deprecated, and discontinued features
- IBM Storage product branding
- IBM Spectrum Scale has been rebranded to IBM Storage Scale.
- License/Edition related changes
- IBM Storage Scale Data Management Edition and IBM Storage Scale Erasure Code Edition entitle clients to use IBM Storage Fusion Data Cataloging Services. IBM Storage Fusion Data Cataloging Services provides unified metadata management and insights for heterogeneous unstructured data, on-premises and in the cloud. For more information, see the Data Cataloging topic in IBM Storage Fusion documentation.
- AFM and AFM DR-related changes
-
- Two options are added to the mmafmctl device prefetch command.
- The --skip-dir-list-file option provides granular control over prefetching directories.
- The --empty-ptrash option cleans an AFM directory and makes available more space.
- From IBM Storage Scale 5.1.8.1, RHEL 9.2 is supported on an AFM home/secondary site that uses the NFS protocol.
- Two options are added to the mmafmctl device prefetch command.
- AFM to Cloud Object Storage
- Data replication from a file system to a cloud object storage is supported with the AFM to cloud object storage manual updates mode. For more information, see Replication by using the manual updates mode of the AFM to cloud object storage, Configuring the replication at the file system level by using the manual updates mode of the AFM to cloud object storage, and Evicting data or objects by using the manual updates mode of the AFM to cloud object storage.
- Big data and analytics changes
- For information on changes in IBM
Storage Scale Big Data
and Analytics support and HDFS protocol, see Big Data and Analytics - summary of
changes.
- IBM Storage Scale Container Storage Interface driver changes
- For information on changes in the IBM Storage Scale Container Storage Interface
driver, see
IBM Storage Scale Container Storage Interface
driver - Summary of changes.
- IBM Storage Scale Container Native Storage Access changes
- For information on changes in the IBM
Storage Scale
Container Native Storage Access, see IBM
Storage Scale Container
Native Storage Access - Summary of changes.
- IBM Storage Scale Erasure Code Edition changes
- For information on changes in the
IBM
Storage Scale Erasure Code Edition,
see
IBM
Storage Scale Erasure Code Edition - Summary of changes.
- File system core improvements
-
- Multi-rail over TCP (MROT) enhancement
- Refined the logic for determining when to recover down IP pairs. If a node with down IP pairs leaves a cluster, it is not necessary to recover down IP pairs.
- Support for IBM Security Guardium Key Lifecycle Manager (GKLM) 4.2.0.1
-
IBM Storage Scale 5.1.8 supports IBM Security Guardium Key Lifecycle Manager (GKLM) 4.2.0.1 or later. GKLM V4.2.0.0 is not supported.
- Installation toolkit changes
-
- Extended operating system certification and support.
- Problem determination enhancement in the installation and upgrade process.
- Deploying IBM Storage Scale on the public cloud using cloudkit
-
- Included support for encryption-at-rest.
- Included support for airgap setup.
- Management API changes
- The below endpoints are modified:
- Filesystems/{filesystemName}/filesets/{filesetName}/directoryCopy/{sourcePath}: PUT
- Filesystems/{filesystemName}/filesets/{filesetName}/snapshotCopy/{snapshotName}/path/{sourcePath}: PUT
- Filesystems/{filesystemName}/directoryCopy/{sourcePath}: PUT
- /scalemgmt/v2/usermgmt/changepassword : PUT
- Management GUI changes
- Rebranded "IBM Spectrum Scale" to "IBM Storage Scale".
- File system protocol changes
-
- Updated SMB on IBM Storage Scale to upstream the SMB 4.17 version. The performance of SMB 4.17 version is better than the performance of the SMB 4.16 version. However, the SMB 4.17 performance is not as good as of the SMB 4.12 version.
- System health changes
-
-
No new events added.
-
- Commands, data types, and programming APIs
- The following section lists the modifications to the documented commands, structures, and subroutines:
- New commands
- There are no new commands.
- New structures
-
- Added a new column for call home triggered events and restructured event tables for all components.
- New subroutines
- There are no new subroutines.
- New user exits
- There are no new user exits.
- Changed commands
-
- cloudkit
mmaddnode
- mmafmcosconfig
- mmafmctl
- mmapplypolicy
- mmchfileset
- mmcrfs
- mmcrnsd
- mmlscluster
- mmnfs
- Changed structures
- There are no changed structures.
- Changed subroutines
- Deleted commands
- There are no deleted commands.
- Deleted structures
- There are no deleted structures.
- Deleted subroutines
- There are no deleted subroutines.
- Messages
- The following are the new, changed, and deleted messages:
- New messages
- 6027-2054, 6027-2055, 6027-3269, and 6027-3338
- Changed messages
- There are no changed messages.
- Deleted messages
- There are no deleted messages.