托管磁盘的性能层Performance tiers for managed disks

创建磁盘时,将以其性能层的形式设置 Azure 托管磁盘的性能。The performance of your Azure managed disk is set when you create your disk, in the form of its performance tier. 性能层决定了托管磁盘的 IOPS 和吞吐量。The performance tier determines the IOPS and throughput your managed disk has. 当你设置磁盘的预配大小时,系统会自动选择性能层。When you set the provisioned size of your disk, a performance tier is automatically selected. 可以在部署时或之后更改性能层,而无需更改磁盘大小。The performance tier can be changed at deployment or afterwards, without changing the size of the disk.

通过更改性能层,你可以在不使用磁盘突发功能的情况下做好准备并满足更高需求。Changing the performance tier allows you to prepare for and meet higher demand without using your disk's bursting capability. 与依赖于突发功能相比,更改性能层可能更经济高效,具体取决于所需额外性能的时长。It can be more cost-effective to change your performance tier rather than rely on bursting, depending on how long the additional performance is necessary. 这非常适用于那些暂时需要持续较高性能级别的事件,例如假日购物、性能测试或运行训练环境。This is ideal for events that temporarily require a consistently higher level of performance, like holiday shopping, performance testing, or running a training environment. 为了应对这些事件,你可根据需要使用级别较高的性能层。To handle these events, you can use a higher performance tier for as long as you need it. 当你不再需要额外性能时,可返回到原始层。You can then return to the original tier when you no longer need the additional performance.

工作原理How it works

首次部署或预配磁盘时,该磁盘的基线性能层将根据预配的磁盘大小进行设置。When you first deploy or provision a disk, the baseline performance tier for that disk is set based on the provisioned disk size. 你可以使用高于原始基线的性能层来满足更高的需求。You can use a performance tier higher than the original baseline to meet higher demand. 当你不再需要该性能级别时,可返回到初始基线性能层。When you no longer need that performance level, you can return to the initial baseline performance tier.

你的帐单会随性能层的变化而变化。Your billing changes as your performance tier changes. 例如,如果你预配了 P10 磁盘 (128 GiB),基线性能层将设置为 P10(500 IOPS 和 100 MBps)。For example, if you provision a P10 disk (128 GiB), your baseline performance tier is set as P10 (500 IOPS and 100 MBps). 将按 P10 费率计费。You'll be billed at the P10 rate. 可以升级该层,以匹配 P50(7500 IOPS 和 250 MBps)的性能,而不增加磁盘大小。You can upgrade the tier to match the performance of P50 (7,500 IOPS and 250 MBps) without increasing the disk size. 在升级期间,将按 P50 费率计费。During the time of the upgrade, you'll be billed at the P50 rate. 如果不再需要更高的性能,可返回到 P10 层。When you no longer need the higher performance, you can return to the P10 tier. 磁盘将再次按 P10 费率计费。The disk will once again be billed at the P10 rate.

磁盘大小Disk size 基线性能层Baseline performance tier 可升级到Can be upgraded to
4 GiB4 GiB P1P1 P2、P3、P4、P6、P10、P15、P20、P30、P40、P50P2, P3, P4, P6, P10, P15, P20, P30, P40, P50
8 GiB8 GiB P2P2 P3、P4、P6、P10、P15、P20、P30、P40、P50P3, P4, P6, P10, P15, P20, P30, P40, P50
16 GiB16 GiB P3P3 P4、P6、P10、P15、P20、P30、P40、P50P4, P6, P10, P15, P20, P30, P40, P50
32 GiB32 GiB P4P4 P6、P10、P15、P20、P30、P40、P50P6, P10, P15, P20, P30, P40, P50
64 GiB64 GiB P6P6 P10、P15、P20、P30、P40、P50P10, P15, P20, P30, P40, P50
128 GiB128 GiB P10P10 P15、P20、P30、P40、P50P15, P20, P30, P40, P50
256 GiB256 GiB P15P15 P20、P30、P40、P50P20, P30, P40, P50
512 GiB512 GiB P20P20 P30、P40、P50P30, P40, P50
1 TiB1 TiB P30P30 P40、P50P40, P50
2 TiB2 TiB P40P40 P50P50
4 TiB4 TiB P50P50 None
8 TiB8 TiB P60P60 P70、P80P70, P80
16 TiB16 TiB P70P70 P80P80
32 TiB32 TiB P80P80 None

有关计费信息,请参阅托管磁盘定价For billing information, see Managed disk pricing.

限制Restrictions

  • 目前仅高级 SSD 支持此功能。This feature is currently supported only for premium SSDs.
  • 必须先对 VM 解除分配或从正在运行的 VM 中拆离磁盘,然后才能更改磁盘层级。You must either deallocate your VM or detach your disk from a running VM before you can change the disk's tier.
  • P60、P70 和 P80 性能层只能由大于 4,096 GiB 的磁盘使用。The P60, P70, and P80 performance tiers can only be used by disks that are larger than 4,096 GiB.
  • 磁盘的性能层每 12 小时只能降级一次。A disk's performance tier can be downgraded only once every 12 hours.

后续步骤Next steps

若要了解如何更改性能层,请参阅门户PowerShell/CLI 文章。To learn how to change your performance tier, see portal or PowerShell/CLI articles.