The document discusses VPLEX, EMC's multi-site active-active storage solution. VPLEX allows synchronous data access across data centers for high availability and disaster recovery. It uses clustered controllers and virtualization to provide redundancy. VPLEX can also integrate with RecoverPoint for continuous data protection and replication across three sites.

1. © Copyright 2012 EMC Corporation. All rights reserved. 1

2. VPLEX
雙中心雙活的跨雲解決方案
唐光豫 (Michael Tang)
資深技術經理
EMC Taiwan
© Copyright 2012 EMC Corporation. All rights reserved. 2

3. 重點內容
• VPLEX 架構與系統功能介紹
• VPLEX 雙活架構與高可用性說明
• 最高等級的資訊保護 : 雙活中心 + 持續性資料保護
• Q&A
© Copyright 2012 EMC Corporation. All rights reserved. 3

4. EMC 雙中心雙活的跨雲解決方案
VPLEX Metro
Across Data Centers
Synchronous Distances
DA VPLEX 2nd site
Within B Data Center
Active Active
DR
VPLEX 1st site
Within A Data Center RecoverPoint
Operational And 3rd
Site Recovery
Mobility. Availability. Collaboration.
© Copyright 2012 EMC Corporation. All rights reserved. 4

5. VPLEX 叢集式架構
• 1/2/4 I/O Engines To Scale Performance
• Redundant Power Feeds
• Redundant Battery Backup
• Redundant Fibre-Channel Switches For
Internal Communication (Dual/Quad)
• Management Server And Cabling
• Non-Disruptive Forever
single
quad
dual
© Copyright 2012 EMC Corporation. All rights reserved. 5

6. VPLEX 控制引擎介紹
Arrays Hosts  Standard EMC Hardware
• Field-Replaceable Components
CPU
 Two Directors Per Engine, Each With:
• Front-End Host (8Gb/s FC)
Cores • Back-End Array (8Gb/s FC)
Engine • Intel Multi-Core CPU
COM • Large User Data Cache
Cache • Inter-Cluster COM (8Gb/s FC or 2x 10GigE)
• Intra-Cluster COM (8Gb/s FC)
• Intra-Engine COM (Gen2 PCIe)
WAN COM Cluster COM
Engine (Director A/B)
© Copyright 2012 EMC Corporation. All rights reserved. 6

7. VPLEX 虛擬邏輯磁區介紹
Front End (FE) • Virtual Volumes Are Exposed To Front-
End Hosts In Storage Views. Host I/O And
SCSI Task Management Is Done Here.
Cache • Virtual Volume Data Is Cached And Kept
Consistent And Coherent Across All
C Directors In A VPLEX System.
O • Virtual Volumes Are Composed Of
Device Virtualization
M Storage Volumes. Local And Distributed
Mirroring Is Done Here.
Back End (BE) • Storage Volumes Represent Physical
Devices Claimed From Back-End Arrays.
Array I/O And Multi-Pathing Is Done Here.
© Copyright 2012 EMC Corporation. All rights reserved. 7

8. VPLEX 雙活架構說明
– For availability, VPLEX allows
Site A Site B for a high-availability
infrastructure as well as for
FE
FE
eliminating failover from storage
operations.
Cache
Cache
– For mobility, you can also take
advantage of VPLEX’s disaster
avoidance, data center migration,
Dev Virt
and workload-rebalancing
Dev Virt
capabilities.
– For collaboration, VPLEX
enables instant and
BE
BE
simultaneous data access over
VPLEX VPLEX
distance and streamlined
workflows.
© Copyright 2012 EMC Corporation. All rights reserved. 8

9. VPLEX 高可用性架構說明
• Server Failure
Site A
-Volumes Continue To Be Available At Surviving Cluster.
(Preferred) Site B
• VPLEX Cluster Component Failure
-VPLEX Geosynchrony Automatically Recovers.
• Cluster Link Failure
-Volumes Continue To Be Available At Preferred Cluster.
• Preferred Cluster Failure
-VPLEX Witness Detects Failure And Guides Surviving
Cluster To Continue I/O Regardless Of Preference.
• Storage Array Failure
-VPLEX Continues I/O To Mirrored Copy On Surviving
Array.
VPLEX • Failure Of VPLEX Witness
Witness
-No Impact.
© Copyright 2012 EMC Corporation. All rights reserved. 9

10. VPLEX Witness 運作說明
Stretched Witness
vSphere 1. I/O Through Both Clusters.
Cluster
2. Cluster A Failure. Witness Can
Site A (pref) Site B See B But Not A.
FE
FE
3. Witness Guides Cluster B To
Override Preference. App I/O
Cache
Continues Through B And
Cache
Changes Are Recorded In DRL.
4. Cluster A Is Back Online, And
learns That B Resumed.
Dev Virt
Dev Virt
5. B Resyncs A Based On DRL.
6. Resync Finishes.
BE
BE
© Copyright 2012 EMC Corporation. All rights reserved. 10

11. 最高等級的資訊保護 :
雙活中心 + 持續性資料保護
RecoverPoint
RecoverPoint CDP RecoverPoint CLR RecoverPoint CRR
RecoverPoint CDP
Continuous Data Concurrent Local And Remote Continuous Remote
Continuous Data
Protection Replication Replication
Protection
VNX VMAX 10K VMAX 20K VMAX 40K VPLEX
© Copyright 2012 EMC Corporation. All rights reserved. 11

12. VPLEX新功能 - RecoverPoint Splitter
RecoverPoint
Front End (FE) Appliances
(RPA)
Cache • Splitter intercept all virtual volume
changes to RPA
Splitter • Any Point in Time Recovery
Site A Site B Site C
Device Virtualization VPLEX
VPLEX VPLEX RecoverPoint CRR RPA
Metro
Back End (BE)
© Copyright 2012 EMC Corporation. All rights reserved. 12

13. EMC 雙中心雙活的跨雲解決方案
VPLEX Metro
Across Data Centers
Synchronous Distances
DA VPLEX 2nd site
Within B Data Center
Active Active
DR
VPLEX 1st site
Within A Data Center RecoverPoint
Operational And 3rd
Site Recovery
Mobility. Availability. Collaboration.
© Copyright 2012 EMC Corporation. All rights reserved. 13

14. Questions?
© Copyright 2012 EMC Corporation. All rights reserved. 14