Red Hat fully supports persistent memory (pMEM) FS-DAX mode in RHEL 7.6 for SAP HANA and RHEL 7.6

RHEL对Intel持久内存技术的支持情况

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#rhel #File System DAX #Device DAX

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Red Hat与Intel和SAP合作，在RHEL 7.6相关版本中支持Intel Optane DC持久内存的File System DAX技术用于SAP HANA生产部署。持久内存有块模式、Device DAX模式和File system DAX模式，介绍了RHEL不同版本对这些模式的支持现状。

https://access.redhat.com/articles/3830541

Updated 2019年一月26日03:11 -

English

Red Hat has been collaborating with Intel and SAP to jointly support Intel Optane DC Persistent Memory (pMEM) File System DAX (FS-DAX) as part of RHEL 7.6 for SAP Solutions and RHEL 7.6 for SAP HANA subscriptions for production deployments of SAP HANA 2.0 SPS 03, revision 35 and later. The FS-DAX technology is now fully supported for the RHEL for SAP releases indicated above.

Intel Optane DC Persistent Memory devices provide data center class persistent memory technology, which is of particular interest for low latency use cases such as reducing the startup time for relational databases.

Persistent memory can be configured in one of the following ways for use by applications:

Block mode
Device DAX mode
File system DAX mode

The current status of persistent memory support and File System DAX for ext4 and XFS is as follows:

Block Mode is fully supported in RHEL 7.3 and later.
Device DAX is fully supported in RHEL 7.4 and later.
File System DAX as part of RHEL 7.6 for SAP Solutions and RHEL 7.6 for SAP HANA subscriptions is fully supported for production deployments of SAP HANA 2.0 SPS 03, revision 35 and later.
File System DAX for ext4 and XFS is Tech Preview in RHEL 7.3-7.6
(see RHEL 7.6 Release Notes for more details) and is targeted for full support in a future minor release of Red Hat Enterprise Linux 7.