1. 5 reasons to store your backups on ReFS 3.0 and Storage Spaces
Microsoft 2016
11/25/2017 3:56 PM
THR3032
5 reasons to store your backups on ReFS 3.0 and Storage Spaces
Anton Gostev
VP, Product Management
Veeam Software
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. “It saves time and disk space while reducing risk”
Microsoft 2016
11/25/2017 3:56 PM
The Real Game Changer
Flemish Information Agency (Belgium government agency)
“ReFS v3 for backup storage is technology C-level managers understand perfectly. It saves time and disk space while reducing risk and optimizing operational efficiency.”
“It saves time and disk space while reducing risk”
– Didier Van Hoye
© 2016 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. Typical Backup Storage Requirements
11/25/2017 3:56 PM
Typical Backup Storage Requirements
Scalability
Backup size + Horizontal expandability
Performance
Backup performance (backup window and RPO) + Restore performance (RTO)
Cost
Disk space consumption by backup archive + Hardware costs
Integrity
Ensure consistency + Detect silent data corruption
Reliability
Recover from data corruption
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

4. 11/25/2017 3:56 PM
Scalability
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

5. Backup Size ReFS is built to scale
11/25/2017 3:56 PM
Backup Size
ReFS is built to scale
The file system for the following decade (or two)
64-bit file system > most limits are 2^64
That is 18 billions billions of objects, or 16 EB data size (16,384 PB)
No nasty NTFS limitations
64TB chkdsk volume limit of NTFS, max file fragments issues (FORMAT /L for 4096 FileRecords)
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

6. Horizontal Expandability
11/25/2017 3:56 PM
Horizontal Expandability
Core feature of Storage Spaces
Simple expansion [up to a few nodes] with classic Storage Spaces
Storage Spaces Direct make it easy to go up to 16 nodes (but requires Datacenter licensing)
4PB maximum storage pool size
But unlimited pools in the system (and unlimited number of spaces in pool)
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. 11/25/2017 3:56 PM
Performance
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. Backup Window Write performance Write I/O test
11/25/2017 3:56 PM
Backup Window
Write performance
ReFS is perfect for fat and slow hard drives because it behaves like log-structured file system when data integrity streams are enabled, eliminating I/O blender effect
Write I/O test
How 100% 4KB random writes land to the disk
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

9. Restore Performance Read performance Read I/O test
11/25/2017 3:56 PM
Restore Performance
Read performance
ReFS is perfect for fat and slow hard drives because it was built to optimize reads via allocation and defrag policies (and again, enabling data integrity streams makes it even better for slow storage)
Read I/O test
How 100% random address requests land on the disk
Perfect for running VMs directly from backup files!
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Backup File Management
11/25/2017 3:56 PM
Backup File Management
Accelerated full backup file transformations
BlockClone API allows to create and modify files without actually moving data blocks around
Up to 20x times faster performance
By the way – the same API is used by Hyper-V 2016 to commit snapshots on ReFS
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. Incremental Backup A1 A0 B0 C0 A2 C1 .vib 1 .vbk 1 40% 30% 60% 50%
Incremental Backups
.vib 1 A1 A0 B0 C0
.vbk 1
Full Backup
40%
30%
60%
50%
.vib 2 A2
.vib 3 C1
Backup Repository

12. Synthetic Full Backup (Legacy)
Incremental Backups
.vbk 2
Synthetic Full
70%
80%
90%
60% A0 A1 A2 A2 B0 B0 C0 C1 C1
.vbk 1
.vib 1
.vib 2
.vib 3
Backup Repository

13. Synthetic Full Backup (ReFS)
Incremental Backups A2 B0 C1
.vbk 2
Synthetic Full
60% A0 A1 A2
Fast clone reference to existing blocks B0 C0 C1
.vbk 1
.vib 1
.vib 2
.vib 3
ReFS Backup Repository

14. Storage Spaces for Even More Performance
11/25/2017 3:56 PM
Storage Spaces for Even More Performance
Automatic storage tiering (SSD/HDD)
Backups land on SSD reducing backup window and accelerating restore from the latest restore points
Works differently depending on Storage Spaces flavor
Real-time tiering for Storage Spaces Direct 
Scheduled task for classic Storage Spaces 
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. 11/25/2017 3:56 PM
Cost
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

16. Cost Hardware costs The case of missing ReFS dedupe?
11/25/2017 3:56 PM
Cost
Hardware costs
General purpose servers and JBODs – enough said
The case of missing ReFS dedupe?
Pluggable architecture allows integrating software dedupe, which brings some unique benefits
Disk space consumption by backup archive
Raw disk space consumption by GFS backup archive rivals that of deduplicating storage appliances!
Makes deduplication of encrypted backup files possible (matching data blocks are tracked by software)
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. Synthetic Full Backup (ReFS)
Incremental Backups A2 B0 C1
.vbk 2
Synthetic Full
60% A0 A1 A2
Fast clone reference to existing blocks B0 C0 C1
.vbk 1
.vib 1
.vib 2
.vib 3
ReFS Backup Repository

18. 11/25/2017 3:56 PM
Integrity
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

19. Integrity Prevents data corruption Detects silent corruption
11/25/2017 3:56 PM
Integrity
Prevents data corruption
ReFS ensures consistency with allocate-on-write, so that data blocks are never modified in-place. Enabled by default for metadata, and for file data with data integrity stream enabled.
Detects silent corruption
ReFS data integrity scanner detects and notifies you about silent data corruption aka “bit rot”
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

20. 11/25/2017 3:56 PM
Reliability
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

21. Reliability Production ready Proactive error correction
11/25/2017 3:56 PM
Reliability
Production ready
Recommended file system for Hyper-V 2016 – enough said
Proactive error correction
Backing ReFS volume with Storage Spaces enables seamless error correction
Automatic healing of corrupted data blocks
Error correction uses mirror or parity copy of the affected block from another system
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

22. Windows Server 2016: Pick any 5
11/25/2017 3:56 PM
Windows Server 2016: Pick any 5
Scalability
Backup size + Horizontal expandability
Performance
Backup performance (backup window) + Restore performance (RTO)
Cost
Disk space consumption by backup archive + Hardware costs
Integrity
Ensure consistency + Detect silent data corruption
Reliability
Recover from data corruption
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

23. How to Enable Data Integrity Stream
11/25/2017 3:56 PM
How to Enable Data Integrity Stream
Set-FileIntegrity X:\Backups\backup.vbk
Get-FileIntegrity X:\Backups\backup.vbk
© 2014 Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

24. Free IT Pro resources To advance your career in cloud technology
Microsoft Ignite 2016
11/25/2017 3:56 PM
Free IT Pro resources To advance your career in cloud technology
Plan your career path
Microsoft IT Pro Career Center
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Pluralsight 3 month subscription (10 courses)
Phone support incident
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Connect with community of peers and Microsoft experts
Get started with Azure
Microsoft IT Pro Cloud Essentials
Demos and how-to videos
Microsoft Mechanics
Connect with peers and experts
Microsoft Tech Community
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11/25/2017 3:56 PM
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