Opis: Essential Virtual San (VSAN) - Cormac Hogan, Duncan Epping

Understand and implement VMware Virtual SAN: the heart of tomorrow's Software-Defined Datacenter (SDDC) VMware's breakthrough Software-Defined Datacenter (SDDC) initiative can help you virtualize your entire datacenter: compute, storage, networks, and associated services. Central to SDDC is VMware Virtual SAN (VSAN): a fully distributed storage architecture seamlessly integrated into the hypervisor and capable of scaling to meet any enterprise storage requirement. Now, the leaders of VMware's wildly popular Virtual SAN previews have written the first authoritative guide to this pivotal technology. You'll learn what Virtual SAN is, exactly what it offers, how to implement it, and how to maximize its value. Writing for administrators, consultants, and architects, Cormac Hogan and Duncan Epping show how Virtual SAN implements both object-based storage and a policy platform that simplifies VM storage placement. You'll learn how Virtual SAN and vSphere work together to dramatically improve resiliency, scale-out storage functionality, and control over QoS. Both an up-to-the-minute reference and hands-on tutorial, Essential Virtual SAN uses realistic examples to demonstrate Virtual SAN's most powerful capabilities. You'll learn how to plan, architect, and deploy Virtual SAN successfully, avoid gotchas, and troubleshoot problems once you're up and running. Coverage includes * Understanding the key goals and concepts of Software-Defined Storage and Virtual SAN technology * Meeting physical and virtual requirements for safe Virtual SAN implementation * Installing and configuring Virtual SAN for your unique environment * Using Storage Policy Based Management to control availability, performance, and reliability * Simplifying deployment with VM Storage Policies * Discovering key Virtual SAN architectural details: caching I/O, VASA, witnesses, pass-through RAID, and more * Ensuring efficient day-to-day Virtual SAN management and maintenance * Interoperating with other VMware features and products * Designing and sizing Virtual SAN clusters * Troubleshooting, monitoring, and performance optimizationForeword by Ben Fathi xvii Foreword by Charles Fan xix About the Authors xxi About the Technical Reviewers xxiii Acknowledgments xxv Reader Services xxvii Introduction xxix Chapter 1 Introduction to VSAN 1 Software-Defi ned Datacenter 1 Software-Defi ned Storage 2 Hyper-Convergence/Server SAN Solutions 3 Introducing Virtual SAN 4 What Is Virtual SAN? 5 What Does VSAN Look Like to an Administrator? 8 Summary 11 Chapter 2 VSAN Prerequisites and Requirements for Deployment 13 VMware vSphere 5.5 13 ESXi 5.5 U1 14 ESXi Boot Considerations 14 VSAN Requirements 15 VMware Hardware Compatibility Guide 15 VSAN Ready Nodes 15 Storage Controllers 16 Magnetic Disks 18 Flash Devices 19 Network Requirements 20 Network Interface Cards 20 Supported Virtual Switch Types 21 VMkernel Network 21 VSAN Network Traffi c 22 Jumbo Frames 22 NIC Teaming 23 Network I/O Control 23 Firewall Ports 23 Summary 24 Chapter 3 VSAN Installation and Confi guration 25 VSAN Networking 25 VMkernel Network for VSAN 26 VSAN Network Confi guration: VMware Standard Switch 27 VSAN Network Confi guration: vSphere Distributed Switch 28 Step 1: Create the Distributed Switch 28 Step 2: Create a Distributed Port Group 29 Step 3: Build VMkernel Ports 30 Possible Network Confi guration Issues 33 Network I/O Control Confi guration Example 35 Design Considerations: Distributed Switch and Network I/O Control 38 Scenario 1: Redundant 10GbE Switch Without "Link Aggregation" Capability 39 Scenario 2: Redundant 10GbE Switch with Link Aggregation Capability 42 Creating a VSAN Cluster 45 The Role of Disk Groups 45 Disk Group Maximums 46 Why Confi gure Multiple Disk Groups in VSAN? 46 SSD to Magnetic Disk Ratio 47 Automatically Add Disks to VSAN Disk Groups 48 Handling Is_local or Is_SSD Issues 48 Manually Adding Disks to a VSAN Disk Group 50 Disk Group Creation Example 50 VSAN Datastore Properties 53 Summary 53 Chapter 4 VM Storage Policies on VSAN 55 Introducing Storage Policy-Based Management in a VSAN Environment 56 Number of Failures to Tolerate 58 Number of Disk Stripes Per Object 59 Flash Read Cache Reservation 61 Object Space Reservation 61 Force Provisioning 61 VASA Vendor Provider 62 An Introduction to VASA 62 Storage Providers 63 VSAN Storage Providers: Highly Available 63 Changing VM Storage Policy On-the-Fly 64 Objects, Components, and Witnesses 68 VM Storage Policies 68 Enabling VM Storage Policies 69 Creating VM Storage Policies 70 Assigning a VM Storage Policy During VM Provisioning 70 Summary 71 Chapter 5 Architectural Details 73 Distributed RAID 73 Objects and Components 74 Component Limits 76 Virtual Machine Storage Objects 77 Virtual Machine Home Namespace 77 Virtual Machine Swap 78 VMDKs and Deltas 78 Witnesses and Replicas 79 Object Layout 79 VSAN Software Components 82 Component Management 83 Data Paths for Objects 83 Object Ownership 83 Placement and Migration for Objects 84 Cluster Monitoring, Membership, and Directory Services 85 Host Roles (Master, Slave, Agent) 85 Reliable Datagram Transport 86 On-Disk Formats 86 Flash Devices 86 Magnetic Disks 86 VSAN I/O Flow 87 The Role of the SSD 87 Anatomy of a VSAN Read 88 Anatomy of a VSAN Write 90 Retiring Writes to Magnetic Disks 91 Data Locality 91 Storage Policy-Based Management 92 VSAN Capabilities 92 Number of Failures to Tolerate Policy Setting 93 Best Practice for Number of Failures to Tolerate 95 Stripe Width Policy Setting 96 Striping on VSAN Outside of Policy Setting 98 Stripe Width Maximum 100 Stripe Width Confi guration Error 101 Stripe Width Chunk Size 102 Stripe Width Best Practice 102 Flash Read Cache Reservation Policy Setting 103 Object Space Reservation Policy Setting 103 VM Home Namespace Revisited 104 Swap Revisited 104 How to Examine the VM Swap Storage Object 104 Delta Disk / Snapshot Caveat 106 Verifying How Much Space Is Actually Consumed 106 Force Provisioning Policy Setting 107 Witnesses and Replicas: Failure Scenarios 107 Recovery from Failure 110 What About Stretching VSAN? 113 Summary 115 Chapter 6 VM Storage Policies and Virtual Machine Provisioning 117 Policy Setting: Number of Failures to Tolerate = 1 117 Policy Setting: Failures to Tolerate = 1, Stripe Width = 2 124 Policy Setting: Failures to Tolerate = 2, Stripe Width = 2 128 Policy Setting: Failures to Tolerate = 1, Object Space Reservation = 50 Percent 132 Policy Setting: Failures to Tolerate = 1, Object Space Reservation = 100 Percent 136 Default Policy 138 Summary 141 Chapter 7 Management and Maintenance 143 Host Management 143 Adding Hosts to the Cluster 143 Removing Hosts from the Cluster 145 ESXCLI VSAN Cluster Commands 145 Maintenance Mode 146 Recommended Maintenance Mode Option for Updates and Patching 148 Disk Management 149 Adding a Disk Group 149 Removing a Disk Group 150 Adding Disks to the Disk Group 152 Removing Disks from the Disk Group 153 Wiping a Disk 153 ESXCLI VSAN Disk Commands 154 Failure Scenarios 155 Magnetic Disk Failure 156 Flash Device Failure 157 Host Failure 158 Network Partition 159 Disk Full Scenario 164 Thin Provisioning Considerations 165 vCenter Management 166 vCenter Server Failure Scenario 167 Running vCenter Server on VSAN 168 Bootstrapping vCenter Server 168 Summary 171 Chapter 8 Interoperability 173 vMotion 174 Storage vMotion 174 vSphere HA 175 vSphere HA Communication Network 175 vSphere HA Heartbeat Datastores 176 vSphere HA Metadata 177 vSphere HA Admission Control 177 vSphere HA Recommended Settings 177 vSphere HA Protecting VSAN and Non-VSAN VMs 178 Distributed Resource Scheduler 178 Storage DRS 179 Storage I/O Control 179 Distributed Power Management 180 VMware Data Protection 180 Backup VMs from a VSAN Datastore Using VDP 181 Restore VMs to a VSAN Datastore Using VDP 181 vSphere Replication 183 Replicate to VSAN at a Recovery Site 183 Recover Virtual Machine 184 Virtual Machine Snapshots 185 vCloud Director 185 VMware Horizon View 186 VSAN Support for Horizon View 186 VM Storage Policies on VMware View 187 View Confi guration 187 Changing the Default Policy 190 Other View Considerations 190 vCenter Operations 191 vSphere 5.5 62TB VMDK 192 Fault Tolerance 192 Stretched/vSphere Metro Storage Cluster 193 PowerCLI 193 C# Client 193 vCloud Automation Service 193 Host Profi les 194 Auto-Deploy 194 Raw Device Mappings 195 vSphere Storage APIs for Array Integration 195 Microsoft Clustering Services 195 Summary 195 Chapter 9 Designing a VSAN Cluster 197 Sizing Constraints 197 Failures to Tolerate = 1, Stripe Width = 1 199 Flash to Magnetic Disk Ratio 200 Designing for Performance 201 Impact of the Disk Controller 202 VSAN Performance Capabilities 206 VMware View Performance 207 Design and Sizing Tools 208 Scenario 1: Where to Start 209 Determining Your Host Confi guration 211 Scenario 2 213 Determining Your Host Confi guration 215 Scenario 3 217 Determining Your Host Confi guration 218 Summary 220 Chapter 10 Troubleshooting, Monitoring, and Performance 221 ESXCLI 221 esxcli vsan datastore 222 esxcli vsan network 223 esxcli vsan storage 224 esxcli vsan cluster 226 esxcli vsan maintenancemode 227 esxcli vsan policy 228 esxcli vsan trace 230 Additional Non-ESXCLI Commands for Troubleshooting VSAN 231 Ruby vSphere Console 236 VSAN Commands 237 SPBM Commands 256 PowerCLI for VSAN 259 VSAN and SPBM APIs 261 Enable/Disable VSAN (Automatic Claiming) 261 Manual Disk Claiming 261 Change the VM Storage Policy 262 Enter Maintenance Mode 262 Create and Delete Directories on a VSAN Datastore 262 CMMDS 262 SPBM 263 Troubleshooting VSAN on the ESXi 263 Log Files 263 VSAN Traces 264 VSAN VMkernel Modules and Drivers 264 Performance Monitoring 265 ESXTOP Performance Counters for VSAN 265 vSphere Web Client Performance Counters for VSAN 266 VSAN Observer 267 Sample VSAN Observer Use Case 273 Summary 276 TOC, 9780133854992, 7/3/14

Szczegóły: Essential Virtual San (VSAN) - Cormac Hogan, Duncan Epping

Tytuł: Essential Virtual San (VSAN)
Autor: Cormac Hogan, Duncan Epping
Producent: VMWare Press
ISBN: 9780133854992
Rok produkcji: 2014
Ilość stron: 320
Oprawa: Miękka
Waga: 0.51 kg

Recenzje: Essential Virtual San (VSAN) - Cormac Hogan, Duncan Epping