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Chapter 2. What's New in this Release?
This chapter describes the key features and changes in the Red Hat Storage 3.0 update 4 release.
- Support for Just a Bunch of Disks
- Red Hat Storage supports Just a Bunch Of Disks (JBOD) on servers with up to 24 disks. The complexity of RAID is avoided by using 3-way replication with JBOD.
- Three-way replication
- Synchronous three-way replication is now fully supported in Red Hat Storage volumes. Three-way replicated volumes do not require hardware or software RAID. Three-way replication yields best results when used in conjunction with JBODs. Quorum functionality on three-way replicated volumes helps to prevent split-brain scenarios. 3-way replicated volumes provide additional resilience in public cloud deployments as well.Three-way replication is also supported for Hadoop Deployments.
- Performance Enhancements
- Event threads: Two new performance enhancement options namely event-thread.client and event-thread.server are introduced. Configuring appropriate values minimizes the effect of slow throughput and response time in a Red Hat Storage trusted storage pool.
- Virtual Memory parameters: Two new virtual memory parameters can be configured to optimize performance of random, small file workloads and large file sequential workloads.
- Change in the location of the Gluster command log fileGluster commands executed on a node in the Red Hat Storage Truster Storage Pool is logged in the file
/var/log/glusterfs/cmd_history.log. It is no longer a hidden file. - Samba-3 is deprecated from the Red Hat Storage 3.0 Update 4 releaseThe Samba version 3 is being deprecated from RHS 3.0 Update 4. Further updates will not be provided for Samba-3.x. It is recommended that you upgrade to Samba-4.x, which is provided in a separate channel or repository, for all updates including the security updates.RHN channel: rhel-x86_64-server-6-rh-gluster-3-sambaCDN repo: rh-gluster-3-samba-for-rhel-6-server-rpms
- The gluster CLI sub package is deprecated from the Red Hat Enterprise Linux optional channelThe
glusterfs-clisub-package is removed from the product listing forrhel-optionalchannel or repository. No further versions of the sub-package will be shipped to therhel-optionalchannel or repository.
23050%2C+3.0+Update+4+Release+Notes-308-06-2015+18%3A49%3A33Report a bug
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