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Transcript of Replication Block-level, volume-based Synchronous & Asynchronous SMB3 transport Flexibility Any...
Stretching Failover Clusters and Using Storage Replica for Disaster Recovery in Windows Server vNext
Ned PyleSr. PM, Microsoft Corporation
CDP-B352
Me me me meeeeeFile Server and Cluster TeamI get around8 years in MS support8 years IT shops and consulting US Marine Infantry
The “Storage Replication PM”DFSR, FRS (really!), and now… something new
AskDS and FileCab [email protected]
What is a disaster?
Sometimes you need more than a rack
Storage Replica is here
Storage Replica
ReplicationBlock-level, volume-basedSynchronous & Asynchronous SMB3 transport
FlexibilityAny Windows volumeAny fixed disk storageAny storage fabric
ManagementFailover Cluster ManagerWindows PowerShellWMIEnd to end MS Storage Stack
Demo
Proof that this is not vapor
Technical Preview Scenarios
NODE1 in HVCLUS
SR over SMB3
NODE3 in HVCLUS
Stretch Cluster
NODE2 in HVCLUS NODE4 in HVCLUS
Man
hatt
an D
C
Jers
ey C
ity D
C
SRV1
SR over SMB3
SRV2
Server to Server
Man
hatt
an D
C
Jers
ey C
ity D
C
What is block replication?
Blocks, not filesThis is not DFSRReplicating storage blocks underneath the NTFS or ReFS volumeDon’t care if files are in useWrite IOs are all that matter to Storage Replica
Driver layeringMonaco Site
Source SR ServerNice Site
Destination SR Server
SMB Server
File System Filters
NTFS/ REFS
VolSnap Filter
BitLocker Filter
Volume Manager
Partition Manager
Disk Driver
Disk
Partition Manager
Disk Driver
Disk
SR SR
Synchronous workflow
Applications(local or remote)
Source ServerNode (SR)
DataLog
1
t 2
Destination ServerNode (SR)
DataLog
t1 3
2
5
4
Asynchronous workflow
Applications(local or remote)
Source ServerNode (SR)
DataLog
1
t 2
Destination ServerNode (SR)
DataLog
t1 5
4
3
6
Requirements & Recommendations
RequirementsActive Directory (for SMB)No need for Schema updates, AD objects, certain AD functional levels, etc. Uses Kerberos, not NTLM or certificates
≥1 Gbps network between serversDisks GPT, not MBR Yes: JBOD, iSCSI, Local (non-cluster) SCSI or SATA, or SANNo: USB external arrays, thumb drives, tapes, 5.25” floppy disks, etc.Same disk geometry (see guide)Free space for logs on a Windows NTFS/ReFS volumeNo %systemroot% or page file
Firewall ports SMB, WS-MAN
Most “setup isn’t working” emails I get
are from not understanding these
requirementsEspecially MBR, from using Gen1
VMs!
JBOD: “Just a Bunch of Disks.” In Microsoftland, usually a serially-attached SCSI enclosure using
Storage Spaces
Recommendations for SynchronousNetwork latency≤5ms round trip averageAssuming the light speed vacuum ideal, 5ms is ~1500km round trip But reality steps in: optical fiber reduces by 35%, you cross switches, routers, firewalls, etc. – likely ≥2X latent at that rangeDark fiber and 10GBASE have logistical and financial limitsEnd result: most customers end up 30-50km (or stay within the campus)
Disk latencyPerfmon (logical disk) and DISKSPDUse micro benchmarks before and after SR – not in Technical Preview, though!
Log sizing and backingSSD (if you want it to really work!)Larger logs allow faster recovery from larger outages, but cost spaceThese are very strong
recommendations ;)
Recommendations for AsynchronousNetwork latencyDoesn’t matter
Disk latencySame as previous slide
Log sizing and backingSame as previous slide
PhilosophyAsync crash consistency versus application consistencyWe guarantee a mountable volumeYour app guarantees a usable file
SnapshotsWhoops, this is broken in Technical Preview
Accept that async means possible data lossWe have no RPO dial in Technical Preview
How much money is your data worth?
Good ideas for anyoneDrivers drivers drivers!Filters filters filters!Learn your performance envelopes
What are the options?
Hyper-V Replica
Yes NA Yes (VMs hosting file servers)
No Yes (VMs hosting SQL)
Yes (VMs hosting apps & servers)
VM SYSVOL File Server MS Exchange SQL Server Other Applications
Storage Replica
Yes No Yes (bare metal or VMs)
No Yes (VMs hosting SQL)
Yes (VMs hosting apps & servers)
SQL Server AlwaysOn FCIs
NA NA NA NA Yes NA
MS Exchange DAG
NA NA NA Yes NA NA
DFS Replication
No Yes Yes No No No
FRS Never Upgrade to DFSR, soon
Don’t do it Are you crazy? What? No! Hahaha, you are funny
SQL Server AlwaysOn AG
NA NA NA NA Yes NA
Your “other application” vendors must state support – we cannot.
What Storage Replica is notStorage Replica is not “shared nothing” clusteringStorage Replica is not a backupWe will happily replicate the deletion of all data!
Storage Replica is not DFSRNot file-levelNot multi-masterNot multi-endpointNot low-bandwidth
Storage Replica is therefore not a general branch office solution
We mean it!
While we’re on the subject of offices and users…
Marketing view
Your view
TopologyStretch ClusterServer-to-serverNo 1-manyNo a-b-cNo a-b-c-d
Cluster-to-cluster is comingBut not possible in Technical Preview
Fun fact: You can also create server-to-selfYou are on your own, pal
Stretch Clusters
Stretch ClustersSynchronous onlyAsymmetric storageTwo sites, two sets of shared storageCluster storage: CSV or role-assigned
Manage with FCMOr Windows PowerShell
Increase cluster DR capabilities Hyper-V and General Use File Server are the main use cases in the Technical PreviewNot Scale Out File Server
SR-SRV01
SAN/JBOD/iSCSI
Redm
ond
Site
SR-SRV02 SR-SRV03
SAN/JBOD/iSCSI
Belle
vue
Site
SR-SRV04Cluster
Asymmetric
shared storage
Internode network
connectivity
Familiar Failover Cluster Manager GUI
Configure and manage1. Add a source data disk to a role or CSV2. Enable replication on that source data
disk3. Select a source log4. Select a destination data disk5. Select a destination log6. Done. Really!
We’ve already changed this to 2,4,3,5 and altered nearly every word.
Demo
Failover Cluster Manager Provisioning and Failover
Server to Server
Server to ServerSynchronous or asynchronousAny type of fixed disk storage (see previous rules)Configure and manage with Windows PowerShellDesigned explicitly to increase the DR capabilities of a serverCluster to cluster is coming
File Server is the main use cases in the Technical Preview
Ideally, no one ever uses this. Cluster to cluster is far more resilient.
Windows PowerShellModule: WVRGet-SRGroupGet-SRPartnershipNew-SRGroupNew-SRPartnership (Create)Remove-SRGroupRemove-SRPartnershipSet-SRGroupSet-SRPartnership (change direction)Suspend-SRGroupSync-SRGroup
Demo
Server to Server provisioning
A deeper look
Non-clustered Architecture
SR CIM Provider (WvrCimProv.dll in WMIv2 instance)
SMB 3
NTFS/REFS CLFS Log
SR Service (WvrSvc.exe)
SR Filter Driver (wvrf.sys)
Registry SMB 3
Clustered Architecture
SR Service (WvrSvc.exe)
SMB 3
NTFS/REFS CLFS Log
SR CIM Provider (WvrCimProv.dll in WMIv2 instance)
SR Filter Driver (wvrf.sys) SMB 3
Windows Failover Cluster Service
SR Cluster Resource (wvrres.dll)
SMB 3.1 transportUsing the scalability and perf built into SMBSMB MultichannelSMB Direct (RDMA)Encryption and signing
Replication metadataHidden disk partitionHidden logsAlways write through to disk
Registry (“real” and cluster hive)HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WVRHKEY_LOCAL_MACHINE\Cluster\WVR
SupportabilityPerformance CountersDozens of useful countersMade many improvements since Technical Preview
Event LogsHundreds of clear, guided, low-noise eventsMade many improvements since Technical Preview
WPP Tracing Booo! Requires calling MS.If we do our events right, you will never need it
Known issues with Technical PreviewRemoval of replicationPowerShell remotingPerformanceFinicky FCM The ^%# name
Y
AX B
The Step-By-Step guide covers all of this!
The big finish
ComingMicrosoft Azure Site Recovery orchestrationCluster-to-clusterPerformanceEase of managementMigrationInventory
As always: believe it when you see it
Get the guide!Technical Preview Step-by-Step Guide: Storage Replicahttp://go.microsoft.com/fwlink/?LinkID=514902
Or search: filecab blog storage replica
Storage Sessions in chronological order
CDP-B323: Delivering Predictable Storage Performance with Storage Quality of Service in Windows Server vNext (Wednesday Oct 29 8:30 AM)
CDP-B339: Leveraging SAN Replication for Enterprise-Grade Disaster Recovery with Microsoft Azure Site Recovery and System Center 2012 R2 (Wednesday Oct 29 3.15 PM)
CDP-B349: Storage Management in a Hybrid Cloud Environment with Windows Server and System Center (Thursday Oct 30 3.15 PM)
CDP-B325: Designing Scale-Out File Server with DAS Storage in Windows (Friday Oct 31 8.30 am)
Related content
Find me at the Storage booth!
Microsoft Storagehttp://Microsoft.com/storage
Track resources
Storage Replica Intro - http://blogs.technet.com/b/filecab/archive/2014/10/07/storage-replica-guide-released-for-windows-server-technical-preview.aspx
Experience guide - http://go.microsoft.com/fwlink/?LinkID=514902
Windows Server Technical Preview (Storage)http://blogs.technet.com/b/josebda/archive/2014/10/03/windows-server-technical-preview-storage-survival-guide.aspx
Come visit us in the Microsoft Solutions Experience (MSE)!Look for the Cloud and Datacenter Platform area TechExpo Hall 7
For more informationWindows Server Technical Previewhttp://technet.microsoft.com/library/dn765472.aspx
Windows Server
Microsoft Azure
Microsoft Azurehttp://azure.microsoft.com/en-us/
System Center
System Center Technical Previewhttp://technet.microsoft.com/en-us/library/hh546785.aspx
Azure Pack Azure Packhttp://www.microsoft.com/en-us/server-cloud/products/windows-azure-pack
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© 2014 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
