VS5ICM m08 dataprotection

Data Protection Module © 2011 VMware Inc All rights reserved You Are Here Course Introduction Data Protection Introduction to Virtualization Access & Authentication Control Virtual Machines Resource Management and Monitoring VMware vCenter Server High Availability Configure and Manage Virtual Networks Scalability Configure and Manage Virtual Storage Patch Management Managing Virtual Machines Installing vSphere Components VMware vSphere: Install, Configure, Manage – Revision A 8-2 © 2011 VMware Inc All rights reserved Importance Typical backup operations are performed nightly The backup process can be cumbersome because a large amount of data is being copied from the system being backed up to the server performing the backup Over time, your VMware vSphere® environment might undergo changes to its hardware or software configuration In addition, application data goes through constant change From a manageability perspective, it is important to make regular backups of your vSphere environment Backing up virtual machines requires strategies that leverage virtualization architecture to perform highly efficient backups with minimal impact on other virtual machines VMware vSphere: Install, Configure, Manage – Revision A 8-3 © 2011 VMware Inc All rights reserved Learner Objectives After this lesson, you should be able to the following: Describe the problems when using traditional backup in virtual infrastructure Introduce solutions for backing up and restoring virtual machines that leverage virtual infrastructure Discuss technologies that make virtual machine backup and restore operations faster and easier Introduce VMware® Data Recovery to back up and restore a virtual machine Describe how to backup and restore VMware vCenter Server™ Discuss a strategy for backing up and restoring a VMware ESXi™ host’s configuration data VMware vSphere: Install, Configure, Manage – Revision A 8-4 © 2011 VMware Inc All rights reserved Traditional Backup Method physical server physical server backup agent backup server (uses nearly 100% of server resources during backup) operating system operating system x86 architecture x86 architecture network connection backup to tape or disk VMware vSphere: Install, Configure, Manage – Revision A data to back up 8-5 © 2011 VMware Inc All rights reserved Backup Challenges in Virtualized Environments traditional backup method backup server VMware vSphere Excessive physical resource use generated by each virtual machine Backup agents installed in virtual machines monopolize host CPU resources during backups, which results in less CPU resource for other virtual machines running on that ESXi host I/O resources such as network and storage are also saturated with read and write operations during backup VMware vSphere: Install, Configure, Manage – Revision A 8-6 © 2011 VMware Inc All rights reserved Virtualization Architecture Advantages No backup agent installation required Enables use of virtual machine snapshot functions Offloads backup processing from ESXi hosts to a backup server Virtual machines see the same virtual hardware Ability to thin provision virtual disks Enables faster backup and recovery times through the use of changed block tracking (CBT) and data deduplication Provides a single backup image Provides both image-level and file-level restoration VMware vSphere: Install, Configure, Manage – Revision A 8-7 © 2011 VMware Inc All rights reserved VMware vSphere vStorage APIs for Data Protection Allows backup and recovery of entire virtual machine images across SAN storage or local area networks Is an API that is directly integrated with backup tools from third-party vendors Enables you to remove load from the host and consolidate backup load onto a central backup server Protects virtual machines that use any type of storage supported by ESXi (Fibre Channel, iSCSI, NAS, or local storage) VMware vSphere: Install, Configure, Manage – Revision A 8-8 © 2011 VMware Inc All rights reserved Offloaded Backup Processing backup server VMware vSphere mount virtual disks to backup server tape disk Configure the storage environment so that the backup server can access the storage volumes that are managed by the ESXi servers Backup processing is offloaded from ESXi host to backup server, which prevents local ESXi resources from becoming overloaded VMware vSphere: Install, Configure, Manage – Revision A 8-9 © 2011 VMware Inc All rights reserved Changed Block Tracking virtual machine H/W version ctkEnabled=true scsi0:0.ctkEnabled=true scsi1:0.ctkEnabled=true virtual machine H/W version ctkEnabled=true scsi0:0.ctkEnabled=true -ctk.vmdk -ctk.vmdk -ctk.vmdk Copy only file blocks that have changed since the last backup Enables faster incremental backups and near-continuous data protection VMware vSphere: Install, Configure, Manage – Revision A 8-10 © 2011 VMware Inc All rights reserved Data Deduplication 1st storage array backup 2nd backup 3rd backup 4th backup unique file blocks Does not store twice blocks with the same information as a previous backup Reduces 18 file blocks down to unique file blocks Saves storage capacity Provides faster backup performance VMware vSphere: Install, Configure, Manage – Revision A 8-11 © 2011 VMware Inc All rights reserved Data Recovery Appliance Backup-and-recovery appliance: Agentless, disk-based backup-andrecovery virtual appliance: SCHEDULE BACKUPS VIA • VMware ESXi VMWARE vCENTER Linux-based Based on the vSphere vStorage APIs for Data Protection SERVER Integrated with vCenter Server: VMware vSphere Client™ plug-in Supports up to ten appliances per vCenter Server instance: Supports up to 100 virtual machines per appliance CREATE SNAPSHOT DATA DEDUPLICATED AND STORED VMware vSphere: Install, Configure, Manage – Revision A Intended for small- to medium-sized environments 8-12 © 2011 VMware Inc All rights reserved Virtual Machine Snapshot Consistency pending transactions backup server -delta.vmdk vmdk snapshot delta (read/write) backup to tape or disk original disk (read only) Snapshot delta disk captures continued write operations Pending transactions are committed to original disk Original disk is placed in read-only mode and backed up Writes conducted during backup are copied to original disk after backup completes and -delta.vmdk file is deleted VMware vSphere: Install, Configure, Manage – Revision A 8-13 © 2011 VMware Inc All rights reserved Data Recovery Components vSphere Client with Data Recovery client plug-in vCenter Server deduplicated storage Data Recovery appliance virtual machines to back up host VMware vSphere: Install, Configure, Manage – Revision A host 8-14 © 2011 VMware Inc All rights reserved Deduplication Store A deduplication store: Is the appliance’s backup storage: Data Recovery • A virtual disk on a VMware vSphere VMFS or NFS datastore • • A raw device mapping (RDM) deduplication store (backup storage) A Common Internet File System (CIFS) share Checks to see whether identical backup data has already been saved Virtual machine disks (VMDKs) or RDMs are recommended over CIFS shares VMware vSphere: Install, Configure, Manage – Revision A 8-15 © 2011 VMware Inc All rights reserved Data Recovery Requirements Deduplication store requirements: Limit of two deduplicated stores per appliance Per store: up to 1TB for VMDK or RDM Up to 500GB for CIFS Provide storage space equal to the amount of used disk space on all virtual machines being protected Networking requirements: Ensure that ports 80, 443, 22024, and 902 are open Ensure that DNS names can be resolved Ensure that virtual machines backed up by Data Recovery are appropriately licensed VMware vSphere: Install, Configure, Manage – Revision A 8-16 © 2011 VMware Inc All rights reserved Backing up vCenter Server Choose a complementary backup solution that matches your vCenter Server deployment Obtain a full backup of your vCenter Server with each backup Prior to starting backups, stop these services: VMware VirtualCenter Server VMware VCMSDS (the ADAM database) Database service (SQL, Oracle, DB2) Backup the vCenter Server database using recommended practices provided by the database vendor Backup the SSL certificates Backup the vpxd.cfg file VMware vSphere: Install, Configure, Manage – Revision A 8-17 © 2011 VMware Inc All rights reserved Backing Up ESXi Host Configuration Data Always back up your host configuration after installation, after changing the configuration, and after upgrading the host VMware ESXi configuration: Use the vicfg-cfgbackup command • • This command backs up and restores the host’s configuration Run from vSphere Command-Line Interface VMware vSphere: Install, Configure, Manage – Revision A 8-18 © 2011 VMware Inc All rights reserved Review of Learner Objectives You should be able to the following: Describe the problems when using traditional backup in virtual infrastructure Introduce solutions for backing up and restoring virtual machines that leverage virtual infrastructure Discuss technologies that make virtual machine backup and restore operations faster and easier Introduce Data Recovery to back up and restore a virtual machine Describe how to backup and restore vCenter Server Discuss a strategy for backing up and restoring a ESXi host’s configuration data VMware vSphere: Install, Configure, Manage – Revision A 8-19 © 2011 VMware Inc All rights reserved Key Points When you plan your backup strategy for virtual machines, you need to be aware of the various techniques that compliment virtual infrastructures Data Recovery is an agentless, Linux-based virtual appliance used for backing up and recovering virtual machines Data Recovery uses deduplication store technology to make efficient use of the backup storage Data can be restored per virtual machine, per virtual disk, or per file VMware vSphere: Install, Configure, Manage – Revision A 8-20 © 2011 VMware Inc All rights reserved