Tag: Deduplication

DPM Deduplication

Deduplication in System Center Data Protection Manager

Today Microsoft announced support for Deduplication in System Center Data Protection Manager (DPM). To use Deduplication together with System Center Data Protection Manager you have to meet the following criteria:

  • The Server running System Center Data Protection Manager must be virtualized.
  • DPM Server has to use Windows Sevrer 2012 R2
  • The Hyper-V Sever where the DPM VM is running on has to be Windows Server 2012 R2
  • System Center Data Protection Manager must be version 2012 R2 with Update Rollup 4 (UR4) or higher.
  • The Data Storage of the DPM Server must be VHDX Files attached to the DPM VM.
  • DPM VHDX files need to be 1TB of size.
  • The VHDX files of the DPM Server must be stored on a Scale-Out File Server Cluster using SMB 3.0
  • All the Windows File Server nodes on which DPM virtual hard disks reside and on which deduplication will be enabled must be running Windows Server 2012 R2 with Update Rollup November 2014.
  • Deduplication is enabled on the CSV of the Scale-Out File Server
  • It is recommended to use Storage Spaces but it is not required
  • Use Parity Storage Spaces with enclosure-awareness for resiliency and increased disk utilization.
  • Format NTFS with 64 KB allocation units and large file record segments to work better with dedup use of sparse files.
  • In the hardware configuration above the recommended volume size is 7.2TB volumes.
  • Plan and set up DPM and deduplication scheduling
  • Tune the File Server Cluster for DPM Storage

DPM Deduplication

The combination of deduplication and DPM provides substantial space savings. This allows higher retention rates, more frequent backups, and better TCO for the DPM deployment. The guidance and recommendations in this document should provide you with the tools and knowledge to configure deduplication for DPM storage and see the benefits for yourself in your own deployment.

To get more information checkout the following TechNet Article: Deduplicating DPM storage

 



Windows Server 2012 R2 Storage Spaces

What’s new in Windows Server 2012 R2 Storage Spaces

Microsoft announced the next version of the Windows Server platform called Windows Server 2012 R2 at TechEd North America. I already blog about what’s new in Windows Server 2012 R2 Hyper-V. This post will focus about Windows Server 2012 R2 Storage Spaces.

Storages Spaces

First there are new exciting new features in Windows Server 2012 R2 Storage Spaces. Microsoft first released there Software Defined Storage solution called Storage Spaces in Windows Server 2012 and this allows you basically to build your own storage solution based on a simple JBOD hardware solution. Storage spaces is a really cost-effective storage solution which allows companies to save up to 75% of storage costs in compare to traditional SAN storage. I also mention some standard features which are included in Windows Server 2012.

Pooling of disks – You can pool physical disks together and create multiple virtual disks on the storage pool even with different resiliency options.

Continuous availability – Storage Pools and Disks can be clustered with the Microsoft Failover Cluster so if one server goes down the virtual disks and file shares are still available.

SMB copy offload – Offloading copy actions to the storage.

Snapshots – Create Snapshots and  clone virtual disks on a storage pool.

Flexible resiliency options – In Windows Server 2012 you could create a Mirror Spaces with a two-way or three-way mirror, a Parity Space with a single parity and a Simple Space with no data resiliency. New in R2 parity spaces can now be used in clustered pools and there is also a new dual parity option. (enhanced in 2012 R2)

Enhanced Rebuilding – Speed of rebuilding of failed disks is enhanced. (enhanced in 2012 R2)

Storage Tiering – Windows Server 2012 R2 allows you to use different kind of disks and automatically moves “hot-data” from SAS disks to fast SSD storage. (new in 2012 R2)

Write-Back Cache – This feature allows data to be written to SSD first and moves later to the slower SAS tier. (new in 2012 R2)

Data Deduplication – Data Deduplication was already included in Windows Server 2012 but it is enhanced in Windows Server 2012 R2, and allows you to use it together with Cluster Shared Volumes (CSV) and supports VDI virtual machines. (enhanced in 2012 R2)

Management – Complete management solutions with Windows PowerShell, Failover Cluster, Server Manager or new in System Center 2012 R2 – Virtual Machine Manager. Now you can setup new Storage Servers, Storage Pools, Storage Spaces and File Shares directly from Virtual Machine Manager. (enhanced in 2012 R2)

ReFS – The filesystem Microsoft first released with Windows Server 2012 is now also supported for clustering, which means it can be used as a CSV (Clustered Shared Volume). Thanks to Didier Van Hoye (MVP) for adding that to the list