Vplex产品及技术手册.pptx

Module 1: VPLEX Product and Technology Details,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,1,Describe common VPLEX terminology and configurations Describe the VPLEX product hardware and software architecture Describe how VPLEX integrates into an existing environment List and describe various use cases for VPLEX Describe the life of an I/O operation in VPLEX,VPLEX Product and Technology Details,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,2,VPLEX Terminology, Capabilities, and Use Cases,List and define common VPLEX terminology Describe VPLEX architecture, capabilities, Local and Distributed Federation and VPLEX use cases,VPLEX Terminology,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,3,VPLEX Terminology continued,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,4,VPLEX Terminology continued,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,5,EMC Vision for Virtual Storage,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,6,Journey to the Private Cloud,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,7,VPLEX Product Family,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,8,VPLEX Architecture,Next Generation Data Mobility and Access Scale Out Cluster Architecture Start small and grow big with predictable service levels Advanced Data Caching Improve I/O performance and reduce storage array contention Prefetch Operations Distributed Cache Coherence Automatic sharing, balancing and failover of storage domains within and across VPLEX Engines,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,9,Local and Distributed Federation,VPLEX Local Overview,Simplify provisioning and volume management Centralize management of block storage in the data center Physical storage needs to be provisioned once to the virtualization layer Non-disruptive data mobility Optimize performance, redistribute and balance work loads among arrays Domain Failure Can protect against failure domains such as an entire array going down Workload resiliency Improve reliability, scale out performance Storage pooling Manage available capacity across multiple frames based on SLAs,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,10,VPLEX Local Configuration,One Rack 1 4 Engines Fully redundant hardware N+1 performance and scaling More ports and more engines 1+N fault tolerance All directors but one can fail without causing Data U/Data Loss,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,11,VPLEX Metro Overview,AccessAnywhere: Block storage access within, between and across data centers Within synchronous distances Less than 5 msec latency required Connect two VPLEX storage clusters together over distance Enables virtual volumes to be shared by both clusters Provides unique distributed cache coherency for all reads and writes Both clusters maintain the same identity for a volume, and preserve the same SCSI state for the logical unit Enables VMware VMotion over distance, faster than Storage Motion,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,12,VPLEX Metro Configuration,Two Racks of fully redundant hardware 2 to 8 Engines total in a VPLEX Metro Each rack can consist of 1 4 engines FC-WAN 8 Gb Fibre Channel ports 4 per engine / 2 per director,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,13,VPLEX Geo Overview,AccessAnywhere Block storage access within, between and across data centers Within asynchronous distances Max 50 ms round-trip latency Enables virtual volumes to be shared by both clusters Provides unique distributed cache coherency for all reads and writes Both clusters maintain the same identity for a volume, and preserve the same SCSI state for the logical unit,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,14,VPLEX Geo Configuration,Two Racks of fully redundant hardware 2 to 8 Engines total in a VPLEX Geo Each rack can consist of 1 4 engines IP-WAN 10 Gb (1 Gb) Ethernet ports 4 per engine / 2 per director,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,15,Typical VPLEX Use Cases,Data center consolidation Zero downtime data center Relocation Ability to move VM/data to new data center with no downtime Decommission the original data center Distributed load balancing Pre-emptive disaster avoidance Zero downtime maintenance Lease rollovers,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,16,VPLEX Local Target Use Cases,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,17,VPLEX Remote Target Use Cases,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,18,VPLEX Product and Technology Details,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,19,VPLEX 4.X Architecture,List and define VPLEX 4.X hardware and software architecture Describe product packaging Define how VPLEX VPLEX 4.X maps native array volumes to VPLEX virtual volumes,VPLEX Metro VPN,Creates a secure connect between the two management servers Uses x.509 certificates and 2048-bit RSA encryption Configured and setup during installation when using the EZ Setup Wizard,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,20,VPLEX Architecture,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,21,Hardware Components,Engine I/O Module I/O Carrier DAE and SSD card Power Supply Fan Management Server,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,22,VPLEX v4.0 Engine Overview,Scale out cluster architecture Start small and grow big with predictable service levels Advanced data caching Improve I/O performance and reduce storage array contention Distributed cache coherency Automatic balancing and failover of storage domains within and across Data Centers Federated information access “AccessAnywhere” enables geographic data distribution,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,23,VPLEX v4.0 Engine,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,24,VPLEX v4.0 I/O Modules,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,25,VPLEX v4.0 I/O Module Carrier,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,26,VPLEX v4.0 I/O Module Types,4 port 8 Gbps Fibre Channel I/O Module Used for FC COM and FC WAN connectivity with an I/O Module carrier,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,27,VPLEX v4.0 Management and Power Modules,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,28,VPLEX v4.0 SPS LEDs,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,29,VPLEX v4.0 Engine Fans,Fans are monitored through the power supplies. Labeled A to D from left to right. Loss of one fan does not impact the system. System remains on for three minutes if two fans fail.,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,30,VPLEX V4.X Configurations at a Glance,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,31,VPLEX Product and Technology Details,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,32,VPLEX 5.X Architecture,List and define VPLEX 5.X hardware and software architecture Describe product packaging Define how VPLEX 5.X maps native array volumes to VPLEX virtual volumes,VPLEX v5.0 Engine,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,33,VPLEX v5.0 I/O Modules,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,34,VPLEX v5.0 I/O Module Types,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,35,VPLEX v5.0 Management and Power/Fan modules,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,36,VPLEX v5.0 SPS LEDs,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,37,VPLEX V 5.X Configurations at a Glance,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,38,VPLEX Product and Technology Details,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,39,VPLEX Management and Packaging,List and define VPLEX management hardware Describe product packaging,VPLEX Management Server,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,40,VPLEX Management IP Infrastructure,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,41,Switch and Management Server IP Formulas,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,42,VPLEX Director IP Formula,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,43,VPLEX Local IP Layout,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,44,Management Server Management Port for B-side network: 128.221.253.33 Service Port: 128.221.252.2 Management Port for A-side network: 128.221.252.33 Public LAN port: Customer Assigned IP Address FC Switch 1 IP Address: 128.221.252.34 Engine 4, Cluster 1 Director A IP Addresses: 128.221.252.41, 128.221.253.41 Director B IP Addresses: 128.221.252.42, 128.221.253.42 Engine 3, Cluster 1 Director A IP Addresses: 128.221.252.39, 128.221.253.39 Director B IP Addresses: 128.221.252.40, 128.221.253.40 Engine 2, Cluster 1 Director A IP Addresses: 128.221.252.37, 128.221.253.37 Director B IP Addresses: 128.221.252.38, 128.221.253.38 Engine 1, Cluster 1 Director A IP Addresses: 128.221.252.35, 128.221.253.35 Director B IP Addresses: 128.221.252.36, 128.221.253.36 FC Switch 2 IP Address: 128.221.253.34,Fibre Channel COM Switches,Connectrix DS-300B Creates redundant Fibre Channel network for COM Each director has two independent COM paths to every other director Required on all VPLEX Medium and Large systems Dual use 4 ports per switch Quad use 8 ports per switch 16 ports are unused/unlicensed (disabled),Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,45,VPLEX Supported Configurations,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,46,Volumes Required for Cluster Operations,Metadata volume Required to hold VPLEX volume configurations within a cluster Front-end ports cannot be enabled without this volume Creation of a metadata volumes is part of installation Must be at least 78 GB Recommended to be mirrored across two arrays Follow stated best practices to backup metadata volumes when required Logging volume (VPLEX Metro only) Required for creating distributed devices Keeps track of blocks written during a loss of connectivity between clusters 10 GB logging can support 320 TB of distributed storage Receives a lot of I/O during link outages Should be fast (host on Fibre Channel disks),Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,47,Management Server User Accounts,Linux shell admin Performs administrative user management actions SCP files onto the management server to the directories they have access to Modify the public Ethernet settings service Starts and stops necessary OS and VPLEX Services VPLEX Management Console (CLI and GUI) admin Access to the management server desktop, VPlexcli, and Management Console GUI Ability to start and stop management server services Access to most files on the filesystem service Ability to create, modify, and delete VPLEX user accounts Access to management server desktop, VPlexcli, and GUI Ability to start and stop management server services,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,48,VPLEX Constructs,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,49,VPLEX Product and Technology Details,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,50,VPLEX I/O Operations,Describe the life of an I/O operation within a single cluster and VPLEX Metro Define caching layers, roles and interactions within a VPLEX system Describe system interaction during reads and writes Demonstrate path and system component redundancy,Cache Coherency,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,51,Cache,Cache,Cache,Cache,New Write: Block 3,Read: Block 3,How a Read is Handled,Local Cache Hit Director searches its local cache Data exists and is delivered to host from local cache Global Cache Hit Director searches its local cache Data does not exist local cache miss Director check the global cache coherence table Data does exist on a different director Global cache hit Director receives an acknowledgement telling it which director to read from Director reads from the cache of another director,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,52,I/O Flow of a Local Read Hit,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,53,I/O Flow of a Global Read Hit,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,54,I/O Flow of a Read Miss,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,55,How a Write is Handled,Operation Host sends a write to the director Director checks the global cache coherence table to ensure that another director does not have a lock on the location Director acquires global cache coherence lock(s) on blocks Director notifies the other directors within the cluster of the global cache coherence change Director writes I/O to disk Director sends an acknowledgement to the host Protection Every write is acknowledged by the array before sending an ACK In VPLEX Metro each leg is updated before sending an ACK,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,56,I/O Flow of a Write Hit,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,57,ACK,I/O Flow of a Write Miss,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,58,ACK,I/O Flow of a Distributed Devices Write,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,59,Clustered Application,Host in Data Center B writes data to shared volume,Data is written through cache to backend storage,Data is acknowledged by back-end arrays,Data is acknowledged to host once safe,10110,ACK,ACK,Mirrored Volume,10110,10110,ACK,10110,ACK,FC,I/O Flow of Remote Access Reads and Writes,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,60,Host in Data Center B writes data to volume,10110,10110,READ,READ,Host in Data Center A reads data from volume,10110,10110,11001,Host in Data Center A writes data to volume,11001,11001,Path Redundancy and Failure Handling,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,61,Path Redundancy Across Engines,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,62,VPLEX Metro Partition and Site Failures,Consider a distributed system with two sites From Site As perspective the following two conditions are indistinguishable Addressing this is fundamental to the design of distributed applications.,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,63,Detach Rules to Deal with Failure Situations,Cluster-1-detaches Reads and writes will continue for the leg of the distributed device at cluster-1 Logging volume will track the changes to the leg at cluster-1 Reads and writes will suspend for the leg at cluster-2 Cluster-2-detaches Reads and writes will continue for the leg of the distributed device at cluster-2 Logging volume will track the changes to the leg at cluster-2 Reads and writes will suspend for the leg at cluster-1 Manual detach Both legs of a distributed device will suspend Administrator must pick the winning side/leg Available with VPLEXCLI only,Copyright 2011 EMC Corporation. All Rights Reserved.,Product and Technology Overview,64,VPlexcli:/distributed-storage/distributed-devices ll Name Status Operational Health Auto Rule Set Name WOF Transfer - - Status State Resume - Group Size - - - - - - Name - - - - - - - - - DS_1 running ok ok true cluster-1-detaches - 2M DS_2 running ok ok true cluster-1-detaches - 2M DS_DISK running ok ok true cluster-2-detaches - 2M VPlexcli:/distributed-storage/distributed-devices set DS_DISK:rule-set-name “cluster1_Active“,Detach Rule Timer,Inter-Cluster Link Loss Default timer of 5 seconds I/O is immediately suspended at both sites and timer is started If connectivity between the two VPLEX clusters is restored within the given period I/O is automatically resumed and the distributed mirror is kept intact If connectivity between the two clusters is not restored within the timeout period I/O is resumed at the biased site I/O is suspended