member of Erste Group 80 people (Croatian subsidiary) 250 people (Together with IT Dev part of ErsteBank) IT service provider for ErsteBank Group entities 3 Datacenters in Croatia(Zagreb, Bjelovar, Rijeka) Microsoft technologies (AD, Exchange, SQL, Lync, System Center, TMG, SharePoint, TeamSystem, File Servers, Failover Clustering, DFS, Hyper-V, etc...) 500 servers (90% virtualized)

Hyper-V, Guest Clustering, Deduplication

Not supported Support for Virtual Fibre Channel Adapters 2 Boot from SANSnapshots Host based backups using VSS Supported Live Migration of the VM Guest Cluster MPIO on the guest Live Storage Migration of plain data on the SAN HBA and SAN NPIV support required

Virtual Fiber Channel architecture 3 DSM Guest MPIO DSM Guest MPIO Switch Fabric SAN Up to 4 VFC adapters Each adapter is associated with a virtual SAN Each adapter connects with one or two WWNN\WWPN address pairs HA VMs require two to support mobility scenarios in the cluster

Virtual Fibre Channel Adapters NPIV settings 4 Each adapter is associated with a virtual SAN Each adapter connects with one or two WWNN\WWNP address pairs HA VMs require two for mobility support in cluster

Guest Clustering using FC storage access VMs should use WS2008, WS 2008 R2 or WS 2012 NPIV Support required Up to 4 HBAs inside Guests Multiple SANs access MPIO on Host and Guest can coexist Live Migration supported WWN Pairs should be assigned to the VMs Hyper-V alternates between Set A and Set B on LMs VMs should use WS2008, WS 2008 R2 or WS 2012 NPIV Support required Up to 4 HBAs inside Guests Multiple SANs access MPIO on Host and Guest can coexist Live Migration supported WWN Pairs should be assigned to the VMs Hyper-V alternates between Set A and Set B on LMs FC SAN LUN

Check with your fibre channel adapter vendor that: The fibre channel adapter is certified for Windows Server 2012 You have the latest firmware and drivers for the adapter #1 issue we’re seeing so far

Verify that you have enabled NPIV on the storage fabric meaning: NPIV is enable on the Fibre Channel HBA and NPIV is enabled on the Fibre Channel Switch port Configure WWPN/WWNN as stated in the TechNet article HERE?

Finally: Fibre channel also offers a similar sounding feature called NPV Hyper-V doesn’t use NPV requires Hyper-V requires NPIV

Demo #1 Virtual FC adapter SAN Switch, WWN, Zoning LUN mounting Clustering Live Migration while copying data to/from cluster

Common Data Optimization Techniques Encoding a unit of data using fewer bits. Can be lossless as in ZIP or LZH formats. Or it can be lossy, as in JPEG or MP3 formats where data is actually removed. Compression: This is also known as Single Instance Storage (SIS). This is the act of identifying identical files within a data set, storing only one copy of the file and replacing all instances of the file with references to that copy. A list of the optimized files is stored in the SIS database. File-level deduplication: The act of breaking files into chunks, identifying identical chunks, storing only one copy of each chunk, and maintaining in-file references to the set of chunks which comprise that file. Chunk-level deduplication is a superset of File-level deduplication and generally provides higher optimization ratios. Chunk-level deduplication can occur at fixed or variable chunk sizes. Generally, smaller and variable chunk sizes lead to higher optimization rates both coming at the cost of additional processing overhead. Chunk-level deduplication:

This is what the files look like before deduplication Pre Deduplication

Identify the Chunks that are Identical 14 Attributes Metadata ABC Attributes Metadata MNO Unnamed Data Stream ABC XYZ

Move Data Chunks into the Chunk Store Attributes Metadata Attributes Metadata Unnamed Data Stream ABCXYZ ABCMNO

Move Data Chunks into the Chunk Store Attributes Metadata Attributes Metadata Unnamed Data Stream ABC XYZ ABCMNO Metadata Attributes SparseReparse Point Metadata Attributes SparseReparse Point

The data streams have been moved to a new structure called the chunk store. In place of the data stream, a reparse point is created that points to the chunk store. In addition, the stream is marked as sparse to indicate that the stream is segmented. Post Deduplication

The Dedup files, like VSS files, are stored in each volume's respective 'System Volume Information' directory. This includes logs, settings, state information, and the actual Chunk Store. The Chunk Store

Quick Glance Dedup Facts The Dedup feature is not installed by default Dedup is a ‘server only’ feature Dedup is not supported on: FAT volumes Boot or System Volumes Remote Drives 3 rd party file systems

Quick Glance Dedup Facts II Dedup skips the following file types: Encrypted Files Files with 'extended attributes' Files less than 64KB in size Files with reparse points Dedup volumes can be backed up and restored optimized

Typical Savings

File Cluster, File Share Volumes ErsteBank Example #1

General File Share Volume ErsteBank Example #2

Garbage collection process to clear data chunks that are no longer referenced. This process deleted content to free up additional space. Data scrubbing checks integratiy and validate the checksum data. These jobs can be ran manually by running Start-DedupJob –Type Scrubbing and –Type GarbageCollection. Garbage Collection and Data Scrubbing

Demo #2 Setting Deduplication on File Cluster Starting Deduplication Optimization Analysis