Q&A in vmware VDP

yanchuen

　　使用到了vdp，对vdp不慎理解，在官网上找到了一篇很不错的文章，翻一下来大家共同学习。
　　

Q: What is VMware vSphere Data Protection (VDP)?
　　VDP is a robust, simple-to-deploy, disk-based backup and recovery solution. VDP is fully integrated with VMware vCenter Server and the VMware vSphere Web Client. VDP enables centralized and efficient management of backup jobs while storing backups in deduplicated destination storage.
　　什么是vsphere 数据保护（vdp）？
　　VDP是一个健壮的、可恢复的解决方案。VDP集成在vmware vCenter和vmware vSphere web客户端中。VDP允许在冗余的存储中进行集中的、有效率的管理和备份。

Q: Is VDP replacing VDR (VMware Data Recovery)?
　　Yes. VDR is not supported with vSphere 5.1 and higher. VDR is being deprecated, but will be supported as detailed in the VMware Life Cycle Policies.
　　VDP能代替VDR（vmware数据恢复）吗？
　　可以。VDR不能支持vSphere 5.1以及更高的版本。VDR如今是不推荐使用的，但是在vmware产品生命周期策略中仍然被官方支持。

Q: Will I be able to use my backups from VDR with VDP?
Yes. A migration tool is included with VDP 5.1.10 and latmatcher releases. This tool handles migration of data and restore points. Backup jobs cannot be migrated. For more information, see:match

• 　　The VMware vSphere Blog post, vSphere Data Protection (VDP) Version 5.1.10 is Generally Available.
  
• 　　Migrating restore points from VDR to VDP (2051891)
  　　
  

我可以从VDR到VDP中使用我的备份吗？
可以，VDP 5.1.10以及以后的版本中包含一个迁移工具。这个工具解决数据迁移和恢复点。但是备份工作不可以迁移。更多信息可以看以下链接。


Q: Do I need additional licenses to use VDP 5.1?
VDP is included with vSphere Essentials Plus and higher.
我需要额外的序列号来使用VDP 5.1吗？
VDP已经包括在了vsphere 基本要件中了。


Q: How is VDP deployed?
Like VDR, VDP is an appliance that is delivered as an OVA template. Each OVA is preconfigured with destination datastore sizes of 0.5 TB, 1 TB, and 2 TB. Note that the actual storage consumed by the appliance is greater than the destination datastore sizes.
VDP如何被部署？
像VDR一样，VDP是一个像OVA模板一样交付的应用。每一个OVA已经被提前配置为接受数据存储大小为0.5T、1TB、2TB。注：实际上应用的存储消耗远大于目的存储大小。

Q: How does VDP compare to VDR?
VDR was a first generation solution bundled with vSphere 4 for the rapidly growing backup market and experienced rapid adoption by VMware customers. However, in the constant effort to deliver more value to customers, VMware has been actively working on improving data protection and disaster recovery with enhanced backup and replication solutions. This led VMware to introduce a new, more robust product in the form of VDP. To maximize customer value, VMware decided to collaborate with the EMC Avamar team, who has world-class industry leading expertise in backup and recovery technology to build the underlying foundation for VDP.
VDP和VDR的比较？
VDR是和vsphere4绑定在一起的第一代解决方案以应对快速增长的备份市场和mware客户快速增长的需求。然而，在不懈地向客户交付更多价值下，vmware已经实现了在快速增长的数据保护、灾难恢复情况下提高备份和冗余的方法。这是vmware决定和EMC avamar团队合作；EMC avamer团队是世界级备份和恢复技术创造者。从而开发出VDP。


Q: Is it possible to mount a CIFS of NFS share directly from the appliance and use these as backup data destinations?
Mounting a CIFS or NFS share directly from or “within” the appliance is not supported. The VDP appliance (.vmdk files) can be deployed to a NFS share mounted by a vSphere host. Windows based NFS shares are not supported.
从NFS中挂载CIFS，和应用直连并且使用备份可能吗？
不支持。VDP应用（.vmdk文件）可以部署在挂载在vsphere主机中的NFS中，基于NFS的微软不支持。

Q: Are there any limits for VDP?
VDP supports these specifications:

• 　　Each vCenter Server can support up to 10 VDP appliances.
  
• 　　Each VDP appliance supports backup for up to 100 virtual machines.
  
• 　　Only 1 VDP appliance can exist per ESXi/ESX host.
  
• 　　Support for 0.5 TB, 1 TB, or 2 TB of deduplicated backup data.
  

Q: Can VDP appliances work together as a unit sharing information such as backup job details, capacity information, etc?
　　No. Each VDP appliance operates independent of other VDP appliances.
　　

　　VDP有什么限制？
　　VDP支持以下规格：
　　每一个Vcenter可以支持10个vdp应用。
　　每一个VDP应用支持100个虚拟机的备份。
　　之用1个vdp应用可以存在每一个esxi/esx主机。
　　支持0.5TB、1TB，2TB的数据冗余。

　　

　　VDP应用可以像一个共享的单元来备份工作细节、容量信息等等吗？
　　不可以，每一个VDP应用操作独立的其他VDP应用。
　　


Configuration
Q: VDP comes in 3 different OVA sizes: 0.5 TB, 1 TB, and 2 TB. Why is this, and is this all the space I need for the appliance?
VDP comes preconfigured with the destination datastores already attached. The OVA sizes indicate the size of the destination datastore. Additional space is required for the operating system and VDP operations (checkpoints, logs, etc). The amount of disk space required is:

OVA Size	Disk Space Required
0.5 TB	850 GB
1 TB	1600 GB (1.57 TB)
2 TB	3100 GB (3.02 TB)

VDP来自3中不同的OVA大小：0.5TB，1TB，2TB。为什么是这样，并且这些所有的空间都是应用需要的吗？
VDP已经被提前配置好并附加在存储中。OVA大小表明了目的数据存储的大小。操作系统和VDP操作需要的额外的（检查点、日志、等等）。挂载的硬盘空间需要如下

OVA 大小	硬盘空间需求
0.5TB	850 GB
1 TB	1600 GB (1.57 TB)
2 TB	3100 GB (3.02 TB）

Notes:

• 　　In VDP 5.5 one OVA size is available, you will be prompted to choose the size of your deduplication store during configuration.
  
• 　　When a VDP appliance is deployed, additional space cannot be added to an existing appliance. If more destination datastore capacity is needed, a new VDP appliance can be deployed (up to 10 appliances can be deployed per vCenter Server).
  
• 　　When sizing a datastore to house a VDP appliance, consider if the virtual machine swap file will also reside here and allocate sufficient space.
  

　　说明：
　　在VDP 5.5中，一个OVA 大小是有效的，你会被提示选择需要的冗余存储，在配置的时候。
　　当一个VDP应用被部署后，额外的空间不可以加载在已经存在的应用中。如果需要更多的数据存储容量，可以部署一个新的VDP应用（每个Vcenter可以部署最多10个VDP应用）
　　当丈量一个数据存储来固定一个VDP应用，考虑虚拟机的缓存文件仍然要保存并且保存在足够的空间中。
　　

Q: Which VDP OVA size should I choose?
　　This depends on your environment: How many virtual machines are being backed up, the various OS types, and the amount of daily I/O being generated.
　　我应该选择哪种OVA的空间大小？
　　这取决于你的环境。有多少个虚拟机需要备份，各种各样的操作系统类型，合计的每天I/O产生。

When a new VDP appliance is created, the destination datastore begins to fill rapidly on each new virtual machine backup added. This is due to the fact that each virtual machine being backed up contains unique data. To help reduce the amount of unique data being backed up, and therefore reduce the rate of growth on initial virtual machine backups, it is best to group similar backups together. For example, the initial backup of two Windows 2008 virtual machines requires less destination datastore space as similar data results in better deduplication efficiency. The initial backup of a Windows 2008 virtual machine and a Linux virtual machine would likely require more destination datastore space as there are unlikely to be similar data. After the initial backups, the VDP appliance backs up less unique data during subsequent backups. This is due to the Changed Block Tracking functionality in vSphere and deduplication in the VDP appliance.
　　当创建一个新的VDP应用后，目的数据存储会根据新虚拟机的备份而快速增长。这取决于每台虚拟机备份独立的数据的事实。为了减少独立数据的备份，然而减少最初的虚拟机备份，最好的办法是进行组类似的备份。例如，起初备份2台windows 2008虚拟机和一台linux虚拟机需要更多的数据存储空间，在初始化备份后，VDP应用在后来的备份中备份较少的独立数据。这取决于块儿功能在vspher和拆分的VDP应用。
　　

　　However, if you are unsure of destination datastore capacity requirements, it is better to deploy a larger VDP appliance. When the appliance has been deployed, additional capacity cannot be added.
　　然而，如果你不确定目的的数据存储空间需求，最好部署一个更大的VDP应用。当这个应用已经部署后，额外的存储空间可以加入。

Q: Can I expand my destination datastore within VDP?
　　Yes, if using VDP Advanced. If using VDP Basic and require additional space, a new VDP appliance must be deployed (up to 10 per vCenter Server). It is not possible to migrate data from the original VDP basic appliance to a new, larger appliance
　　我可以用VDP扩展我的数据存储吗？
　　可以，如果使用VDP高级安装。如果使用VDP基本版并且需要额外的空间，这时需要需要一个新的VDP应用部署（每个Vcenter服务器最多部署10个VDP应用）。迁移数据从一个原始的VDP基础应用到一个新的、更大的应用是不可能的。



Q: Is DNS required for VDP to work?
Yes. Full DNS resolution (shortname, FQDN, forward, and reverse) must be configured correctly for VDP to work. If there are DNS issues, VDP operations, such as backups, are impacted. A DNS host record for a VDP appliance should be created prior to deploying the VDP appliance.
DNS需要VDP来工作吗？
是的，全部的DNS解决方案（别名、正式域名、正向解析、反向解析）必须配置正确使VDP工作。如果有DNS问题，VDP操作，例如备份将受到影响。一个DNS主机记录了一个VDP的应用，传教DNS主机记录优先于部署VDP应用。

Q: What's a blackout window?
The blackout window is the portion of each day reserved for performing server maintenance activities, such as garbage collection, which require unrestricted access to the server. Garbage collection deletes the orphaned chunks of data that are no longer referenced within any backups stored on the system. By default, the blackout window begins at 8 AM local server time and continues uninterrupted for three hours until 11 AM that same morning. This can be customized
什么是暂时失效的windows系统？
暂时失效的windows是每天存储为了执行服务器维护活动，例如垃圾回收，这需要不受限制的连接到服务器。垃圾回收撤销了大块的数据，这些不再被备份存储要。默认的，暂时失效的windows开始在早上的8点并且持续到上午11点如果不被打断。这些都可以自己设置。



Note: No backup or administrative activities are allowed during the blackout window, however restores can be performed.
　　注意：没有备份和管理员行为允许进行在暂时失效的windows系统中，然而，恢复可以执行。

Q: What's the difference between the blackout window and the maintenance window?
　　The maintenance window is the portion of each day reserved for performing routine server maintenance activities such as integrity check validation, whereas the blackout window performs server maintenance which requires unrestricted access.
　　暂时失效的windows和处于维护的windows有什么不同？

　　维护的windows是每天保留为了执行持续的服务器维护行为，例如确认检查完整性，这时暂时失效的windows执行服务器维护，这需要自由的接入。

　　Note: Backups can be initiated during the maintenance window, but doing so impacts both the backup and maintenance activities.
　　注意：暂时失效的系统可以初始在维护的windows，但是做这些影响备份和维护操作。

Q: Can I set a blackout window to 0?
　　No. A blackout window is required. It is possible to customize when the blackout window occurs.
　　我可以将暂时失效的windows调整为0吗？
　　不可以，暂时失效的windows是需要的，当暂时失效的窗口发生了可以被手动调整。

Q: What are checkpoints and when would I be required to use them?
A checkpoint is a system-wide backup taken for the express purpose of assisting with disaster recovery. Checkpoints are scheduled and created once a day during the maintenance window. VDP stores two checkpoints (one validated and one not validated).
　　什么是检查点，我何时才会用到它们？
　　检查点是全系统的备份为了灾难恢复时候使用。检查点是已经排程的并且在窗口处于维护模式的时候每天创建一次。VDP存储两个检查点。（一个生效一个不生效）
　　

Q: What happens if rollback doesn't work?
　　If a rollback fails, then deployment of a new VDP appliance is required. Migrating configuration and backup data from one appliance to another is not supported in VDP 5.1, this functionality was added in VDP 5.5.
　　如果回退不工作怎么办？
　　如果回退失效，这是部署一个新的VDP应用。迁移 并且备份数据从一个应用到另一个不支持VDP5.1的应用，这个功能被加入到了VDP5.5中。


Backup
　　备份。

　　

Q: If I create a backup job during the backup window, will it start backing up immediately?
　　No. The backup jobs are scanned at the start of the backup window. If the job does not exist at this time, it will not run. It will be scheduled to automatically start at the next backup window. However, you can manually start a backup job during the backup window.
　　如果我在窗口备份期创建了备份，我怎么执行使其立即备份操作。
　　不，备份任务在备份窗口期间被扫描，如果操作在这次不存在，它不会执行。它会被安排在自动执行中在下一个备份的窗口期间。然而，你可以手动开启一个备份操作在备份窗口期间。

Q: Can I schedule backup jobs to run at different times?
In VDP 5.1.x, there is only one backup window per VDP appliance. The backup jobs are run during this backup window. It is not possible to create separate backup windows for each backup job. When creating a backup job, it is possible to define how often the backup runs. For example, daily, weekly, or monthly.

　　In VDP 5.5, it is possible to define a scheduled time per job. For more information, see the Specifying the Backup Schedule section of the vSphere Data Protection 5.5 Administration Guide.
　　我可以安排备份任务在不同的时间吗？
　　在vDP5.1中，每一个窗口只有一个VDP应用。备份任务在备份窗口期间运行，如果不能为每一个窗口创建一个单独的备份。当创建一个备份任务时，确定多久备份操作执行就是可能的了。例如，每日，每周，每月。
　　在vDP5.5中，确定一个事件表为每一个操作。

Q: How many backups can run in parallel?
　　Each VDP appliance can simultaneously back up a maximum of eight virtual machines.
　　多少个备份操作可以并行进行？
　　备份最多8个虚拟机，每一个VDP应用可以同时进行。


Restore
　　恢复。

　　

Q: Am I able to do a file-level restore (FLR) of my Linux virtual machines?
　　The file-level restore is web-based, so a supported web browser is required. At the time of writing, a command-line FLR is not available.
　　我一个做一个文件等级的恢复（FLR）在我的linux虚拟机上吗？
　　文件等级的恢复需要网络的支持，所以浏览器需要安装。在写入的时间，命令行的FLR不可行。

Q: Are there any prerequisites to use the FLR?
　　A web browser is required to connect to the VDP appliance. VMware Tools must also be running within the virtual machine where the file-level restore is occurring.
　　那些提前步骤需要使用到FLR？

　　web浏览器需要连接到VDP应用上。VMware 工具需要运行在虚拟机中无论文件级备份是否进行中。

Q: Am I able to restore a backed-up virtual machine's virtual disk to different datastores?
　　It is possible to restore a virtual machine to a datastore other than the original. However, all files that make up the restored virtual machine are restored to the same datastore.
　　我可以存储一个暂时失效的虚拟机磁盘到不同的数据存储中吗？
　　可以，无论如何，所有的文件组成的恢复虚拟机需要被存储到同样的存储中去。

Q: Can I perform a Restore Rehearsal, as I used to do in VDR?
　　Yes, restore rehearsal functionality is available in the VDP 5.1.10. For more information, see the vSphere Data Protection 5.1.10
　　我可以执行恢复的预演吗？就像我在VDR中使用时的一样？
　　是的，可以。恢复预演功能在VDP5.1.10中提供。
　　Release Notes.

See Also

• 　　Migrating restore points from VMware Data Recovery to vSphere Data Protection
  

Request a Product Feature
To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.