Month: January 2015

Windows 2012 R2 Distributed File System Replication

Distributed File System Replication

The Distributed File System Replication (DFSR) service is a new multi-master replication engine that is used to keep folders synchronized on multiple servers.
DFS Replication is an effective way to replicate data between servers across a LAN or WAN (remote sites).DFSR uses a new compression algorithm called Remote Differential Compression (RDC).



Hyper-V and VMware Dynamic Memory optimization technique

Memory optimization is the most important feature of virtualization, especially for cloud computing and virtual desktop infrastructure (VDI) implementation where PCs are replaced by virtual machines running in the data center. This brings the necessity of using hardware resources more efficiently and host more VM’s.

Memory optimization is handled in a different method in each hypervisor. For example, Hyper-V uses a hot-add and ballooning technique and guest operating system is fully aware of memory amounts; while VMware uses over commitment technique.

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Basics of Dynamic Memory

Dynamic Memory is Hyper-V memory optimization techniques. That came with Windows Server 2008 R2 Service Pack 1.

Dynamic Memory is really just an extension idea of hot-add memory ability feature of Windows Server Enterprise and Data-center editions. Memory is added to virtual machines while they run. But instead of plugging in large amounts, tiny amounts of memory are added to the virtual machine. This is done on an on-demand basis from the pool of available memory on the host.