Master Redundancy 163 The Segments 164 Segment Redundancy 164 Segment Failover and Recovery 165 Example Segment Host Hardware Stack 165 Example Segment Disk Layout 166 The Interconnect 166 directory location on the master 192 Creating Data Storage Areas on Segment Hosts 193 To create the data directory locations on all segment hosts 193 Next Steps 193 Validating Your Systems 193 Validating 233 Example iptables Rules 233 Example Master and Standby Master iptables Rules 234 Example Segment Host iptables Rules 235 Installation Management Utilities 235 Installation Management Utilities

Machine Type 254 Compute 254 Memory 254 Network 254 Storage 254 GCP Recommendations 255 Master and Segment Instances 255 Azure 255 Virtual Machine Type 256 Compute 256 Memory 256 Network 256 Storage 256 VMware Redundancy 261 About the Greenplum Segments 261 Segment Redundancy 262 Segment Failover and Recovery 262 Example Segment Host Hardware Stack 263 Example Segment Disk Layout 264 About the Greenplum Interconnect in Greenplum Database 280 About Segment Mirroring 280 Segment Failover and Recovery 281 VMware Tanzu Greenplum 6 Documentation VMware, Inc. 12 About Master Mirroring 282 About Interconnect Redundancy

Segment 2 上，吉站可为 Gygenglum [后科称 GP 对是个PogigreSoL 实明和。GP 对外主代的入口，并用户雪上并行 情人 上| aaase 这He，人的入对 Segment 渤行;Standby aster 有为 aster 提供可用 Segment 节相生的工作 生生，并肝一个Segment节上上各有和个 PostgresoL 人 是大理相的咱入口，Sbwve 人 asler的| 站 YS0 的蛮，Regs 共生他 在aater segmment 类下，汪astey 页，其和合以上的至多个 Segment 中，和可以 Rd Css 只不过es Costsr 是下化的 在 aster segment 中党 Mostsyr Seve 本，内 本用 后林地来六Yaster sbave 主要和和抽《元和 ，而 Mastersegment 全由时行人区(水表 节点上的postmaster 示人ork 出一个于渤和，电红Query Dipatsher ( 局 ouer opaeer cg 人对上的二行理，生外交名、人化上优化有生了人查询计全二后查计划过这bpa 放送 近它风Segment上 L asama ro 进香查询 ouev pecor

56629f5ab2ca83436c8eb/p4_1.jpg) - WAL 日志文件XLOG 文件是一个逻辑概念，每一个XLOG 文件，大小为4G(16*256)，由256个segment组成； • Segment由2048个Block组成，其大小为16M； - Block为WAL日志的最小单位，其大小8k，由PageHeaderData、XlogRecord、XLogRecData组成。

Type 284 Compute 284 Memory 284 Network 284 Storage 284 GCP Recommendations 285 Master and Segment Instances 285 Azure 285 Virtual Machine Type 286 Compute 286 Memory 286 Network 286 Storage Redundancy 291 About the Greenplum Segments 291 Segment Redundancy 292 Segment Failover and Recovery 292 Example Segment Host Hardware Stack 293 Example Segment Disk Layout 294 About the Greenplum Interconnect About Redundancy and Failover in Greenplum Database 313 About Segment Mirroring 313 Segment Failover and Recovery 314 About Master Mirroring 314 About Interconnect Redundancy 315 About Database Statistics

Master Redundancy 229 The Segments 230 Segment Redundancy 230 Segment Failover and Recovery 231 Example Segment Host Hardware Stack 231 Example Segment Disk Layout 232 The Interconnect 232 Interconnect directory location on the master 259 Creating Data Storage Areas on Segment Hosts 259 To create the data directory locations on all segment hosts 259 Next Steps 260 Validating Your Systems 260 Validating iptables 299 Example iptables Rules 300 Example Master and Standby Master iptables Rules 301 Example Segment Host iptables Rules 301 Installation Management Utilities 302 Installation Management Utilities

Master Redundancy 237 The Segments 237 Segment Redundancy 238 Segment Failover and Recovery 238 Example Segment Host Hardware Stack 239 Example Segment Disk Layout 239 The Interconnect 240 Interconnect directory location on the master 267 Creating Data Storage Areas on Segment Hosts 267 To create the data directory locations on all segment hosts 267 Next Steps 268 Validating Your Systems 268 Validating iptables 308 Example iptables Rules 309 Example Master and Standby Master iptables Rules 310 Example Segment Host iptables Rules 311 Installation Management Utilities 311 Installation Management Utilities

Master Redundancy 234 The Segments 234 Segment Redundancy 235 Segment Failover and Recovery 235 Example Segment Host Hardware Stack 236 Example Segment Disk Layout 237 The Interconnect 238 Interconnect directory location on the master 264 Creating Data Storage Areas on Segment Hosts 264 To create the data directory locations on all segment hosts 265 Next Steps 265 **Validating Your Systems** 265 Validating iptables 303 Example iptables Rules 304 Example Master and Standby Master iptables Rules 305 Example Segment Host iptables Rules 305 Installation Management Utilities 306 Greenplum Environment Variables 306

Type 230 Compute 231 Memory 231 Network 231 Storage 231 GCP Recommendations 231 Master and Segment Instances 232 Azure 232 Virtual Machine Type 232 Compute 232 Memory 232 Network 232 Storage Redundancy 237 About the Greenplum Segments 237 Segment Redundancy 237 Segment Failover and Recovery 238 Example Segment Host Hardware Stack 238 Example Segment Disk Layout 239 About the Greenplum Interconnect About Redundancy and Failover in Greenplum Database 254 About Segment Mirroring 254 Segment Failover and Recovery 255 About Master Mirroring 255 About Interconnect Redundancy 256 About Database Statistics

VMware, Inc 11 Compute 266 Memory 266 Network 266 Storage 266 GCP Recommendations 267 Master and Segment Instances 267 Azure 267 Virtual Machine Type 268 Compute 268 Memory 268 Network 268 Storage 268 Azure Redundancy 273 About the Greenplum Segments 273 Segment Redundancy 274 Segment Failover and Recovery 274 Example Segment Host Hardware Stack 275 Example Segment Disk Layout 276 About the Greenplum Interconnect About Redundancy and Failover in Greenplum Database 295 About Segment Mirroring 295 Segment Failover and Recovery 296 About Master Mirroring 296 About Interconnect Redundancy 297 About Database Statistics