双活数据中心与灾备解决方案-技术部分

are: EMC VPLEX, NetApp Metro Cluster (see VMware HCL for more information)
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• Stretched clusters support Live vMotion of workloads • Use L3 for all VMkernel networks: Management, vMotion, IP Storage • All management components such as vCenter Server, NSX Manager and Controllers are located in Site A • Latency and bandwidth requirements are dictated by vMSC storage vendor, eg 10ms RTT for VPLEX
Policy-based
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Fault Tolerance vs. High Availability
• Fault tolerance
– Ability to recover from component loss – Example: Hard drive failure
• High availability
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计算资源设计
Making an Application Service Highly Available
• vSphere HA • vSphere App HA
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vSphere App HA
Protect off-the-shelf apps
VMware vFabric™ tc Server
Cluster Configuration
vCenter Server
Site A
VMware ESXi VMware ESXi
Site B
VMware ESXi
• vMSC enables stretched clusters across two
VMware ESXi
physical sites
双活数据中心与灾备解决方案-技术部分
臧铁军@VMware GCH COE 云架构师
© 2014 VMware Inc. All rights reserved.
议程
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同城双活技术方案
异地灾备技术方案
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基于虚拟化技术的业务连续性解决方案概览
本地站点
Dev / Test
灾备站点
Dev / Test Dev / Test
which also aligns with vMotion using Enterprise Plus
• vMSC enables disaster avoidance and basic Disaster Recovery (without the orchestration or testing
4 vCPU Secondary
Fast Checkpointing
4 vCPU Primary
Benefits vSphere • Protect mission-critical, high-performance applications regardless of OS • Continuous availability: zero downtime, zero data loss for infrastructure failures • Fully automated response
X
Downtime in one year
Uptime percentage in one year
99
99.9 99.99 99.999 “five nines”
3.65 days
8.76 hours 52 minutes 5 minutes
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支持多vCPU的容错技术
Overview
Instantaneous Failover
1. VXLAN with Stretched Clusters (vSphere Metro Storage Cluster) 2. VXLAN with Separate Clusters 3. L2 VPN
All solutions provide L2 extension over an L3 network, enabling
• FT support for up to 4 vCPUs • Protection for high performance, multi-vCPU VMs • New, more scalable technology: fast check-pointing to keep primary and secondary in sync
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长距离vMotion
功能简介
• Targeting cross-continental distances –up to 100 ms RTTs • Maintain standard vMotion guarantees • Leader in VM flexibility
Benefits
• Permanent migrations between data centers • Disaster avoidance (DA)
组件
服务器
存储
数据
站点
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双活数据中心总体架构
站点A 延伸的vSphere集群 站点B
双活存储集群
> 200 km
• • • •
行为与单个vSphere相同 延伸距离最大200KM，通常小于50KM 通过VMware HA与vMotion实现自动的DR保护 需要双活存储集群，如EMC的vPlex，NetApp的MetroCluster等
• DR/DA testing
• Multi-site load balancing • Follow the sun
vSphere 6.0支持跨三层网络和跨vCenter Server的vMotions
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vCenter Availability
• Run vCenter Server application in a VM • Run vCenter Server database in a VM • Run both in same VM?
• Protect with vSphere HA
– vCenter and DB VM restart priority set to High – Enable guest OS and App monitoring – App HA can protect SQL Server database
站点A
物理二层 (裸光纤) 逻辑二层 层叠网络 / VPN 二层网络
站点B
二层网络
VM VM VM
二层分段
扩展的二层网络 (二层内容在 数据中心互连 链路上传递)
VM VM VM
二层分段
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NSX vSphere Multi-Site Use Cases
NSX for vSphere supports 3 different Multi-Site Deployment Models
•
灾难恢复
基于虚拟化层的异步复制 • 基于硬件设备的同异步复制 • 自动化应用切换管理 • 城域集群
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议程
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2
同城双活技术方案
异地灾备技术方案
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双活数据中心在各个级别上全面保障可用性
Storage vMotion， Storage DRS
Metro Cluster vMotion&DRS HA & FT 硬件热添加 多网卡绑定 存储多路径 Data Replication
VMware ESXi VMware ESXi VMware ESXi
Site B
VMware ESXi
Components run in a Site A and are protected by vSphere HA
• They are automatically restarted at Site B in the
• In an NSX deployment Management, Edge and
Stretched Management Cluster
Workload clusters are all stretched
• Under normal conditions all Management
Site A
requirements and their environment
NSX利用层叠网络实现双活数据中心
三层 网络 站点A 站点B
vCenter Server
站点A 边界网关 上联网络A 上联网络B
站点B 边界网关
分布式逻辑路由器
VM1 VM 2 VM3
逻辑交换机A 172.16.10.0/24
VM 4
逻辑交换机B 172.16.20.0/24
VM5
双活存储 vSphere城域存储集群
数据存储1
数据存储2 17
VMware NSX Multi-Site Single VC, Stretched Cluster
Solution Detail
• Requires a supported vSphere Metro Storage Cluster configuration • In a vMSC deployment, storage is Active/Active and spans both sites. Examples of Active/Active storage
capabilities of SRM)
• Loss of either NSX Components or the Datacenter Interconnect will results in a fallback to data plane
based learning using existing network state. Therefore there is no outage to data forwarding and without vCenter Server, there are no VM provisioning or migration operations
• Back up vCenter Server VM and database
– Image-level backup for vCenter Server VM – App-level backup using agent for database backup
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网络资源设计
双活数据中心网络架构
方案特点
• 与应用程序和操 作系统无关 • 与硬件设备无关 • 完善的保护 • 简单，经济
资源池
vSphere vSphere vSphere vSphere
资源池
vSphere
本地高可用
• 应用感知的高可用性 • 关键应用零停机保护 • 在线迁移虚拟机，动态调配计算与存储资源 • VMotion and Storage VMotion 数据保护 • 高效的数据备份与恢复 • 可通过运行计划与脚本实现自动化操作
Stretched Edge Cluster
Site A
VMware ESXi VMware ESXi VMware ESXi
Site B
VMware ESXi
event of a site outage. The management network is not stretched and must be enabled on Site B as part of the recovery run book
workload & IP mobility without the need to stretch VLANs
Local egress is supported, however it does add complexity The appropriate deployment model will depend on customer
• NSX and vMSC are complimentary technologies that fit a sweet spot for NSX (Single vCenter Server)
VMware NSX Multi-Site Single VC, Stretched Cluster