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© 2011 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Cisco Validated Design Page 33
Figure 28. NetApp Operations Manager
3.4.12 Data Protection
The availability of thousands of virtual desktops is dependent on the availability of the shared storage on which
the virtual desktops are hosted. Thus, using the proper RAID technology is very critical. Also, being able to protect
the virtual desktop images and/or user data is very important. RAID-DP®, the Citrix StorageLink virtual machine
Backup and Recovery function, NetApp SnapMirror®, and NetApp Snapshot copies are critical components of the
NetApp solution that help address storage availability.
3.4.12.1 RAID-DP
With any Citrix XenDesktop deployment, data protection is critical, because any RAID failure could result in
hundreds to thousands of end users being disconnected from their desktops, resulting in lost productivity. RAID
DP provides performance that is comparable to that of RAID 10, yet requires fewer disks to achieve equivalent
protection. RAID DP provides protection against double disk failure as compared to RAID 5, which can only
protect against one disk failure per RAID group. For more information about RAID DP, refer to NetApp TR-3298:
RAID-DP: NetApp Implementation of RAID Double Parity for Data Protection.
3.4.12.2 Backup and Recovery
The virtual machine Backup and Recovery capability in XenCenter allows customers to use NetApp array-based
block-level Snapshot copies to provide consistent backups for the virtual desktops. NetApp snapshot has simplest
snapshot model with best disk utilization and fast performance.
- Cisco Validated Design 1
- 1.0 Goal 5
- 2.0 Summary of Main Findings 6
- 3.2.1 Fabric Interconnect 8
- 3.2.3 Cisco UCS Chassis 10
- 3.3 Citrix XenDesktop 17
- Citrix XenApp Farm 22
- 3.4.2 Storage Efficiency 27
- Thin Provisioning 28
- Traditional Provisioning 28
- Before AfterBefore After 29
- 3.4.5 Performance 30
- 3.4.12 Data Protection 33
- 3.5.1 Audience 39
- 3.5.2 FlexPod Architecture 39
- 3.7 Microsoft Windows 7 42
- 4.1 Design Fundamentals 50
- 5.0 Solution Validation 54
- 5.4 LAN Configuration 74
- 5.5 SAN Configuration 77
- 5.5.1 Boot From SAN 79
- 5.5.3 SAN Configuration 85
- 5.8 OS Installation 98
- 5.8.1 XenServer Networking 100
- 5.9 XenServer Resource Pools 101
- 6.4 Testing Methodology 107
- 7.0 Test Results 110
- Below 2000ms: 100% 112
- Avg CPU across all cores 116
- Frequency of Response Times 127
- Time (hh:mm:ss) 129
- 9.0 Acknowledgments 131
- 10.0 References 132
- APPENDIX A 133
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