Red Hat Enterprise Linux 6.3 official version released
Red Hat Enterprise Linux 6.3 has made many improvements in Developer Tools, virtualization, security, scalability, file systems, and storage.
Important improvements are as follows:
1. Virtualization
- Provides a Virt-P2V tool that converts physical machines in windows and RedHat Linux to virtual machines for deployment using KVM.
- Online file volume resizing can be performed to improve the availability of virtual machines.
- Enhances the storage performance of qcow2 Disk Images and makes access more asynchronous, reducing vcpu usage and improving overall performance
- Monitors the performance of virtual machines. Using vpmu, You can diagnose the performance of virtual machines on the host.
- Dynamic vcpus allocation does not need to be restarted. This is advantageous for computing resource Scaling (When can the memory be scaled online ?)
- The Virtual Machine sleep status. S3 and S4 are supported (sleep to disk and sleep to memory)
2. scalability
- The maximum number of virtual CPUs supported (vcpus), increased from 64 to 160
- The maximum memory supported by virtual machines is increased from MB to 2 TB.
3. Storage
- Fcoe is fully supported. This feature is still in the preview test phase.
- LVM supports raid 4, 5, and 6 (previously supported by MD ), in this way, common features of Storage Management (volume creation, Volume scaling, raid creation, and snapshot creation) are integrated into one interface, simplifying storage management. This feature is still in the preview test phase.
- LVM supports thin provisioned logical volumes (logical volume allocation on demand ). Previously, all buckets were allocated when they were created. You need to monitor the file system usage and manually increase the volume space. Now you can automatically allocate resources on demand and scale automatically without manual intervention. This feature is still in the preview test phase.
4. Support for openjdk 7
5. MySQL InnoDB plug-in support
This plug-in provides more functions and better performance than the built-in InnoDB engine.
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32-bit: Click to open the link
64-bit: Click to open the link
