6.25 139 Release 6.25.3 139 Cluster Management 139 Query Processing 139 Server 140 Disaster Recovery 140 Release 6.25.2 140 New and Changed Features 140 Server 140 Cluster Management 141 Resolved 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

# VMware Data Recovery 管理员指南 ZH CN-000193-00 vmware $ ^{®} $ 您可以在 VMware 的网站上找到最新的技术文档，网址为 http://www.vmware.com/cn/support/ VMware 网站还提供了最新的产品更新。 如果您对本文档有任何意见和建议，请将您的反馈提交到： docfeedback@vmware VMware Data Recovery 7 备份虚拟机 7 卷影复制服务 8 删除重复存储的优点 8 2 安装 VMware Data Recovery 9 VMware Data Recovery 系统要求 9 安装客户端插件 9 安装备份设备 10 向备份设备中添加硬盘 10 3 配置 VMware Data Recovery 13 启动备份设备 创建备份作业 15 还原虚拟机 16 VMware Data Recovery 故障排除 18 索引 21 ## 关于本文档 《VMware Data Recovery 管理员指南》包含为中小型企业建立备份解决方案的信息。 ## 目标读者 本文档适用于需要使用 VMware Data Recovery 提供备份解决方案的用户。本书的目标读者为熟悉虚拟机技术和数据中心操作且具有丰富经验的

availability, recovery semantics, and guarantees Vasiliki (Vasia) Kalavri vkalavri@bu.edu ## Today's topics • High-availability and fault-tolerance in distributed stream processing • Recovery semantics against failures and guarantee correct results after recovery? • how can we ensure minimal downtime and fast recovery? • how can we hide recovery side-effects from downstream applications? ## What is failures. ## Recovery types ## Recovery types • Precise recovery (exactly-once) • It hides the effects of a failure perfectly • Post-failure output is identical to no-failure ## Recovery types • Precise

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

point-in-time recovery (PITR) .....324 22.3.1. Setting up WAL archiving .....325 22.3.2. Making a Base Backup .....327 22.3.3. Recovering with an On-line Backup .....328 22.3.3.1. Recovery Settings int4|signed four-byte integer| |interval \[(p)]||time span| |line||infinite line in the plane| |lseg||line segment in the plane| |macaddr||MAC address| |money||currency amount| |numeric \[(p, s)]|decimal \[(p, s)]|exact |line|32 bytes|Infinite line (not fully implemented)|$ ((x1,y1),(x2,y2)) $| |lseg|32 bytes|Finite line segment|$ ((x1,y1),(x2,y2)) $| |box|32 bytes|Rectangular box|$ ((x1,y1),(x2,y2)) $| |path|16+16n bytes|Closed

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。

system crashes before the messaging server receives an acknowledgement from the consumer, then on recovery, the message will be available to be delivered to a consumer again. With point-to-point messaging effective to disconnect the brokers, while the mirror events are always captured. ## Disaster & Recovery Considerations As you use the mirror option to replicate data across datacenters, you have to take might have been delivered but that will not have been reflected in the delivery count. During the recovery phase, the server will not have knowledge of that and will deliver the message with redelivered

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

footprints … 52 Working with pads … 62 Working with zones … 63 Routing tracks and vias … 69 Routing differential pairs … 90 Length tuning … 90 Teardrops … 99 Backdrills and hole post-machining (counterbores/countersinks) multiple modes of operation (push-and-shove, walkaround, highlight collisions) and support for differential pair routing as well as length and skew tuning Export of fabrication and plot files in many SetupBoard StackupTracksViasDifferential PairsBoard Editor LayersWidthDiameterHole

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26.2 147 New Features 148 Query Processing 148 Server 148 Cluster Management 148 Disaster Recovery 148 Data Flow 149 Release 6.26.1 149 Zstandard (zstd) Supported Version 149 Query Processing 152 Release 6.25.3 152 Cluster Management 152 Query Processing 153 Server 153 Disaster Recovery 153 Release 6.25.2 154 New and Changed Features 154 Server 154 Cluster Management 154 297 Compute 297 Memory 298 Network 298 Storage 298 GCP Recommendations 298 Master and Segment Instances 299 Azure 299 Virtual Machine Type 299 Compute 299 Memory 299 Network 300 Storage