Distributed Replicated Block Device (Oracle Linux 6 only)

Distributed Replicated Block Device (DRBD) shared-nothing, synchronously replicated block device (RAID1 over network), designed to serve as a building block for high availability (HA) clusters. It requires a cluster manager (for example, pacemaker) to implement automatic failover.

Kernel module signing facility

Applies cryptographic signature checking to modules on module load, checking the signature against a ring of public keys compiled into the kernel. GPG is used to do the cryptographic work and determines the format of the signature and key data.

The kernel module signing facility is a supported feature in the UEK R3 distribution.

Linux Containers (Oracle Linux 6 and x86-64 only)

Based on the Linux cgroups and name spaces functionality, Linux Containers (LXC) allow you to safely and securely run multiple applications or instances of an operating system on a single host without risking them interfering with each other. Containers are lightweight and resource-friendly, which saves both rack space and power. In order to get started with containers, you need to install the lxc package, which is included in the package repository of the Unbreakable Enterprise Kernel.

LXC is a supported feature in the UEK R3 distribution.

Transcendent memory

Transcendent Memory (tmem) provides a new approach for improving the utilization of physical memory in a virtualized environment by claiming underutilized memory in a system and making it available where it is most needed. From the perspective of an operating system, tmem is fast pseudo-RAM of indeterminate and varying size that is useful primarily when real RAM is in short supply. To learn more about this technology and its use cases, see the Transcendent Memory project page on oss.oracle.com: https://oss.oracle.com/projects/tmem/