Azure 备份的支持矩阵Support matrix for Azure Backup

可以使用 Azure 备份将数据备份到 Azure 云平台。You can use Azure Backup to back up data to the Azure cloud platform. 本文汇总了 Azure 备份方案和部署的一般支持设置和限制。This article summarizes the general support settings and limitations for Azure Backup scenarios and deployments.

提供其他支持矩阵:Other support matrices are available:

保管库支持Vault support

Azure 备份使用恢复服务保管库来安排和管理备份。Azure Backup uses Recovery Services vaults to orchestrate and manage backups. 它还使用保管库来存储备份的数据。It also uses vaults to store backed-up data.

下表介绍恢复服务保管库的功能:The following table describes the features of Recovery Services vaults:

功能Feature 详细信息Details
订阅中的保管库数Vaults in subscription 单个订阅中最多可以有 500 个恢复服务保管库。Up to 500 Recovery Services vaults in a single subscription.
保管库中的计算机数Machines in a vault 单个保管库中最多可以有 1,000 个 Azure VM。Up to 1,000 Azure VMs in a single vault.

单个保管库中最多可注册 50 个 MABS 服务器。Up to 50 MABS servers can be registered in a single vault.
数据源Data sources 单个数据源的最大大小为 54,400 GB。Maximum size of an individual data source is 54,400 GB. 此限制不适用于 Azure VM 备份。This limit does not apply to Azure VM backups. 可以备份到保管库的数据总量没有限制。No limits apply to the total amount of data you can back up to the vault.
保管库备份Backups to vault Azure VM: 每天 1 次。Azure VMs: Once a day.

受 DPM/MABS 保护的计算机: 一天两次。Machines protected by DPM/MABS: Twice a day.

直接使用 MARS 代理备份的计算机: 一天三次。Machines backed up directly by using the MARS agent: Three times a day.
在保管库之间备份Backups between vaults 备份在一个区域内进行。Backup is within a region.

在包含想要备份的 VM 的每个 Azure 区域中都需要有一个保管库。You need a vault in every Azure region that contains VMs you want to back up. 无法备份到其他区域。You can't back up to a different region.
移动保管库Move vaults 可以跨订阅或同一订阅中的资源组之间移动保管库You can move vaults across subscriptions or between resource groups in the same subscription. 但是,不支持跨区域移动保管库。However, moving vaults across regions isn't supported.
在保管库之间移动数据Move data between vaults 不支持在保管库之间移动备份的数据。Moving backed-up data between vaults isn't supported.
修改保管库存储类型Modify vault storage type 可以在存储备份之前修改保管库的存储复制类型(异地冗余存储或本地冗余存储)。You can modify the storage replication type (either geo-redundant storage or locally redundant storage) for a vault before backups are stored. 在保管库中开始备份以后,就不能修改复制类型。After backups begin in the vault, the replication type can't be modified.

本地备份支持On-premises backup support

下面是在需要备份本地计算机的情况下的支持项目:Here's what's supported if you want to back up on-premises machines:

计算机Machine 备份的内容What's backed up 位置Location 功能Features
使用 MARS 代理直接备份 Windows 计算机Direct backup of Windows machine with MARS agent 文件、文件夹、系统状态Files, folders, system state 备份到恢复服务保管库。Back up to Recovery Services vault. 一天备份三次Back up three times a day

无应用感知型备份No app-aware backup

还原文件、文件夹、卷Restore file, folder, volume
使用 MARS 代理直接备份 Linux 计算机Direct backup of Linux machine with MARS agent 不支持备份Backup not supported
备份到 DPMBack up to DPM 文件、文件夹、卷、系统状态、应用数据Files, folders, volumes, system state, app data 备份到本地 DPM 存储。Back up to local DPM storage. DPM 然后备份到保管库。DPM then backs up to vault. 应用感知型快照App-aware snapshots

备份和恢复的完整粒度Full granularity for backup and recovery

VM (Hyper-V/VMware) 支持 LinuxLinux supported for VMs (Hyper-V/VMware)

不支持 OracleOracle not supported
备份到 MABSBack up to MABS 文件、文件夹、卷、系统状态、应用数据Files, folders, volumes, system state, app data 备份到 MABS 本地存储。Back up to MABS local storage. MABS 然后备份到保管库。MABS then backs up to the vault. 应用感知型快照App-aware snapshots

备份和恢复的完整粒度Full granularity for backup and recovery

VM (Hyper-V/VMware) 支持 LinuxLinux supported for VMs (Hyper-V/VMware)

不支持 OracleOracle not supported

Azure VM 备份支持Azure VM backup support

Azure VM 限制Azure VM limits

限制Limit 详细信息Details
Azure VM 数据磁盘Azure VM data disks 查看 Azure VM 备份的支持矩阵See the support matrix for Azure VM backup.
Azure VM 数据磁盘大小Azure VM data disk size 对于 VM 中的所有磁盘,单个磁盘大小最大为 32 TB,组合磁盘大小最大为 256 TB。Individual disk size can be up to 32 TB and a maximum of 256 TB combined for all disks in a VM.

Azure VM 备份选项Azure VM backup options

下面是在需要备份 Azure VM 的情况下的支持项目:Here's what's supported if you want to back up Azure VMs:

计算机Machine 备份的内容What's backed up 位置Location 功能Features
使用 VM 扩展的 Azure VM 备份Azure VM backup by using VM extension 整个 VMEntire VM 备份到保管库。Back up to vault. 为 VM 启用备份时安装的扩展。Extension installed when you enable backup for a VM.

一天备份一次。Back up once a day.

应用感知型备份适用于 Windows VM;文件一致性备份适用于 Linux VM。App-aware backup for Windows VMs; file-consistent backup for Linux VMs. 可以使用自定义脚本配置 Linux 计算机的应用一致性。You can configure app-consistency for Linux machines by using custom scripts.

还原 VM 或磁盘。Restore VM or disk.

不能将 Azure VM 备份到本地位置。Can't back up an Azure VM to an on-premises location.
使用 MARS 代理的 Azure VM 备份Azure VM backup by using MARS agent 文件、文件夹、系统状态Files, folders, system state 备份到保管库。Back up to vault. 一天备份三次。Back up three times a day.

如果想要备份特定文件或文件夹,而不是备份整个 VM,MARS 代理可以随 VM 扩展运行。If you want to back up specific files or folders rather than the entire VM, the MARS agent can run alongside the VM extension.
装有 DPM 的 Azure VMAzure VM with DPM 文件、文件夹、卷、系统状态、应用数据Files, folders, volumes, system state, app data 备份到运行 DPM 的 Azure VM 的本地存储。Back up to local storage of Azure VM that's running DPM. DPM 然后备份到保管库。DPM then backs up to vault. 应用感知型快照。App-aware snapshots.

备份和恢复的完整粒度。Full granularity for backup and recovery.

就 VM (Hyper-V/VMware) 来说,支持 Linux。Linux supported for VMs (Hyper-V/VMware).

不支持 Oracle。Oracle not supported.
装有 MABS 的 Azure VMAzure VM with MABS 文件、文件夹、卷、系统状态、应用数据Files, folders, volumes, system state, app data 备份到运行 MABS 的 Azure VM 的本地存储。Back up to local storage of Azure VM that's running MABS. MABS 然后备份到保管库。MABS then backs up to the vault. 应用感知型快照。App-aware snapshots.

备份和恢复的完整粒度。Full granularity for backup and recovery.

就 VM (Hyper-V/VMware) 来说,支持 Linux。Linux supported for VMs (Hyper-V/VMware).

不支持 Oracle。Oracle not supported.

Linux 备份支持Linux backup support

下面是在需要备份 Linux 计算机的情况下的支持项目:Here's what's supported if you want to back up Linux machines:

备份类型Backup type Linux(Azure 认可)Linux (Azure endorsed)
直接备份运行 Linux 的本地计算机Direct backup of on-premises machine that's running Linux 不支持。Not supported. MARS 代理只能安装在 Windows 计算机上。The MARS agent can be installed only on Windows machines.
使用代理扩展备份运行 Linux 的 Azure VMUsing agent extension to back up Azure VM that's running Linux 使用自定义脚本的应用一致性备份。App-consistent backup by using custom scripts.

文件级恢复。File-level recovery.

通过从恢复点或磁盘创建 VM 进行还原。Restore by creating a VM from a recovery point or disk.
使用 DPM 备份运行 Linux 的本地计算机Using DPM to back up on-premises machines running Linux 在 Hyper-V 和 VMWare 上对 Linux 来宾 VM 进行文件一致性备份。File-consistent backup of Linux Guest VMs on Hyper-V and VMWare.

对 Hyper-V 和 VMWare Linux 来宾 VM 进行 VM 还原。VM restoration of Hyper-V and VMWare Linux Guest VMs.
使用 MABS 备份运行 Linux 的本地计算机Using MABS to back up on-premises machines running Linux 在 Hyper-V 和 VMWare 上对 Linux 来宾 VM 进行文件一致性备份。File-consistent backup of Linux Guest VMs on Hyper-V and VMWare.

对 Hyper-V 和 VMWare Linux 来宾 VM 进行 VM 还原。VM restoration of Hyper-V and VMWare Linux guest VMs.
使用 MABS 或 DPM 备份 Linux Azure VMUsing MABS or DPM to back up Linux Azure VMs 不支持。Not supported.

夏令时支持Daylight saving time support

Azure 备份不支持 Azure VM 备份的夏令时自动时钟调整。Azure Backup doesn't support automatic clock adjustment for daylight saving time for Azure VM backups. 它不会将备份的时间向前或向后移动。It does not shift the hour of the backup forward or backwards. 若要确保备份在所需的时间运行,请根据需要手动修改备份策略。To ensure the backup runs at the desired time, modify the backup policies manually as required.

磁盘重复数据删除支持Disk deduplication support

磁盘重复数据删除支持如下:Disk deduplication support is as follows:

  • 使用 DPM 或 MABS 备份运行 Windows 的 Hyper-V VM 时,支持在本地进行磁盘重复数据删除。Disk deduplication is supported on-premises when you use DPM or MABS to back up Hyper-V VMs that are running Windows. Windows Server 会在以备份存储形式附加到 VM 的虚拟硬盘 (VHD) 上执行主机级别的重复数据删除。Windows Server performs data deduplication (at the host level) on virtual hard disks (VHDs) that are attached to the VM as backup storage.
  • 在 Azure 中,任何备份组件都不支持重复数据删除。Deduplication isn't supported in Azure for any Backup component. 如果 DPM 和 MABS 部署在 Azure 中,则附加到 VM 的存储磁盘无法进行重复数据删除。When DPM and MABS are deployed in Azure, the storage disks attached to the VM can't be deduplicated.

安全与加密支持Security and encryption support

Azure 备份支持针对传输中数据和静态数据的加密。Azure Backup supports encryption for in-transit and at-rest data.

发往 Azure 的网络流量Network traffic to Azure

  • 从服务器到恢复服务保管库的备份流量通过高级加密标准 256 进行加密。Backup traffic from servers to the Recovery Services vault is encrypted by using Advanced Encryption Standard 256.
  • 备份数据通过安全 HTTPS 链接进行发送。Backup data is sent over a secure HTTPS link.

数据安全性Data security

  • 备份数据以加密格式存储在恢复服务保管库中。Backup data is stored in the Recovery Services vault in encrypted form.

  • 只有你有解锁此数据的通行短语。Only you have the passphrase to unlock this data. Microsoft 无法解密任何恢复点的备份数据。Microsoft can't decrypt the backup data at any point.

    警告

    设置保管库后,只有你才能访问加密密钥。After setting up the vault, only you have access to the encryption key. Microsoft 不保留副本,且没有访问该密钥的权限。Microsoft never maintains a copy and doesn't have access to the key. 如果客户丢失了密钥,Microsoft 无法恢复备份数据。If the key is misplaced, Microsoft can't recover the backup data.

  • 备份 Azure VM 时,需要在虚拟机内部设置加密。When you're backing up Azure VMs, you need to set up encryption within the virtual machine.

  • Azure 备份支持 Azure 磁盘加密,后者在 Windows 虚拟机上使用 BitLocker,在 Linux 虚拟机上使用 dm-cryptAzure Backup supports Azure Disk Encryption, which uses BitLocker on Windows virtual machines and dm-crypt on Linux virtual machines.

  • 在后端,Azure 备份使用 Azure 存储服务加密来保护静态数据。On the back end, Azure Backup uses Azure Storage Service Encryption, which protects data at rest.

计算机Machine 传输中In transit 静态At rest
没有 DPM/MABS 的本地 Windows 计算机On-premises Windows machines without DPM/MABS 是 是
Azure VMAzure VMs 是 是
本地 Windows 计算机或使用 DPM 的 Azure VMOn-premises Windows machines or Azure VMs with DPM 是 是
本地 Windows 计算机或使用 MABS 的 Azure VMOn-premises Windows machines or Azure VMs with MABS 是 是

压缩支持Compression support

Azure 备份支持对备份流量进行压缩,详细情况汇总在下表中。Backup supports the compression of backup traffic, as summarized in the following table.

  • 就 Azure VM 来说,VM 扩展会通过存储网络直接读取 Azure 存储帐户中的数据,因此无需压缩此流量。For Azure VMs, the VM extension reads the data directly from the Azure storage account over the storage network, so it isn't necessary to compress this traffic.
  • 如果使用 DPM 或 MABS,则可先压缩数据,然后再将其备份,以便节省带宽。If you're using DPM or MABS, you can save bandwidth by compressing the data before it's backed up.
计算机Machine 压缩到 MABS/DPM (TCP)Compress to MABS/DPM (TCP) 压缩到保管库 (HTTPS)Compress to vault (HTTPS)
直接备份本地 Windows 计算机Direct backup of on-premises Windows machines 不可用NA 是
使用 VM 扩展的 Azure VM 备份Backup of Azure VMs by using VM extension 不可用NA 不可用NA
使用 MABS/DPM 在本地计算机/Azure 计算机上备份Backup on on-premises/Azure machines by using MABS/DPM 是 是

保留期限制Retention limits

设置Setting 限制Limits
每个受保护实例(计算机或工作负荷)的恢复点数上限Max recovery points per protected instance (machine or workload) 9,9999,999
恢复点的最长到期时间Max expiry time for a recovery point 无限制No limit
备份到 DPM/MABS 时的最高备份频率Maximum backup frequency to DPM/MABS SQL Server 每隔 15 分钟Every 15 minutes for SQL Server

其他工作负荷每小时一次Once an hour for other workloads
备份到保管库时的最高备份频率Maximum backup frequency to vault 本地 Windows 计算机或运行 MARS 的 Azure VM: 每天三次On-premises Windows machines or Azure VMs running MARS: Three per day

DPM/MABS: 每天两次DPM/MABS: Two per day

Azure VM 备份: 每天一次Azure VM backup: One per day
恢复点保留期Recovery point retention 每日、每周、每月、每年Daily, weekly, monthly, yearly
最大保留期Maximum retention period 取决于备份频率Depends on backup frequency
DPM/MABS 磁盘上的恢复点数Recovery points on DPM/MABS disk 文件服务器为 64 个;应用服务器为 448 个64 for file servers; 448 for app servers

对于本地 DPM 而言,磁带恢复点数没有限制Unlimited tape recovery points for on-premises DPM

后续步骤Next steps