Linux 上的 VM 磁盘的可伸缩性和性能目标Scalability and performance targets for VM disks on Linux

可以将多个数据磁盘附加到 Azure 虚拟机。You can attach a number of data disks to an Azure virtual machine. 根据 VM 数据磁盘的可伸缩性和性能目标,可以确定满足性能和容量要求所需的磁盘数量和类型。Based on the scalability and performance targets for a VM's data disks, you can determine the number and type of disk that you need to meet your performance and capacity requirements.

重要

为了获得最佳性能,需要限制附加到虚拟机的、重度使用的磁盘数,以避免可能的性能限制。For optimal performance, limit the number of highly utilized disks attached to the virtual machine to avoid possible throttling. 如果附加的所有磁盘未在同时重度使用,则虚拟机可以支持更多的磁盘。If all attached disks aren't highly utilized at the same time, the virtual machine can support a larger number of disks.

对于 Azure 托管磁盘:For Azure managed disks:

下表说明了每个订阅的每个区域的资源数的默认限制和最大限制。The following table illustrates the default and maximum limits of the number of resources per region per subscription. 对每个资源组的托管磁盘、快照和映像的数量没有限制。There is no limit for the number of Managed Disks, snapshots and images per resource group.

资源Resource 限制Limit
标准托管磁盘Standard managed disks 50,00050,000
标准 SSD 托管磁盘Standard SSD managed disks 50,00050,000
高级托管磁盘Premium managed disks 50,00050,000
标准 LRS 快照Standard_LRS snapshots 50,00050,000
托管映像Managed image 50,00050,000
  • 对于标准存储帐户: 标准存储帐户的总请求率上限为 20,000 IOPS。For Standard storage accounts: A Standard storage account has a maximum total request rate of 20,000 IOPS. 在标准存储帐户中,所有虚拟机磁盘的 IOPS 总数不应超过此限制。The total IOPS across all of your virtual machine disks in a Standard storage account should not exceed this limit.

    可以根据请求率的限制,大致计算单个标准存储帐户可支持的重度使用磁盘数。You can roughly calculate the number of highly utilized disks supported by a single Standard storage account based on the request rate limit. 例如,对于基本层 VM,高使用率的磁盘数上限约为 66,即每个磁盘 20,000/300 IOPS。For example, for a Basic tier VM, the maximum number of highly utilized disks is about 66, which is 20,000/300 IOPS per disk. 对于标准层 VM,高使用率的磁盘数上限约为 40,即每个磁盘 20,000/500 IOPS。The maximum number of highly utilized disks for a Standard tier VM is about 40, which is 20,000/500 IOPS per disk.

  • 对于高级存储帐户: 高级存储帐户的总吞吐量速率上限为 50 Gbps。For Premium storage accounts: A Premium storage account has a maximum total throughput rate of 50 Gbps. 所有 VM 磁盘的总吞吐量不应超过此限制。The total throughput across all of your VM disks should not exceed this limit.

请参阅 Linux VM 大小了解其他详细信息。See Linux VM sizes for additional details.

托管虚拟机磁盘Managed virtual machine disks

用星号表示的大小当前处于预览阶段。Sizes denoted with an asterisk are currently in preview. 请参阅我们的常见问题解答,了解它们可用的区域。See our FAQ to learn what regions they are available in.

标准 HDD 托管磁盘Standard HDD managed disks

标准磁盘类型Standard Disk Type S4S4 S6S6 S10S10 S15S15 S20S20 S30S30 S40S40 S50S50 S60S60 S70S70 S80S80
磁盘大小 (GiB)Disk size in GiB 3232 6464 128128 256256 512512 1,0241,024 2,0482,048 4,0964,096 8,1928,192 16,38416,384 32,76732,767
每个磁盘的 IOPSIOPS per disk 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 1,300Up to 1,300 最多 2,000Up to 2,000 最多 2,000Up to 2,000
每个磁盘的吞吐量Throughput per disk 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 300 MB/秒Up to 300 MB/sec 最多 500 MB/秒Up to 500 MB/sec 最多 500 MB/秒Up to 500 MB/sec

标准 SSD 托管磁盘Standard SSD managed disks

标准 SSD 大小Standard SSD sizes E1E1 E2E2 E3E3 E4E4 E6E6 E10E10 E15E15 E20E20 E30E30 E40E40 E50E50 E60E60 E70E70 E80E80
磁盘大小 (GiB)Disk size in GiB 44 88 1616 3232 6464 128128 256256 512512 1,0241,024 2,0482,048 4,0964,096 8,1928,192 16,38416,384 32,76732,767
每个磁盘的 IOPSIOPS per disk 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 500Up to 500 最多 2,000Up to 2,000 最大 4,000Up to 4,000 最大 6,000Up to 6,000
每个磁盘的吞吐量Throughput per disk 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 60 MB/秒Up to 60 MB/sec 最多 400 MB/秒Up to 400 MB/sec 最多 600 MB/秒Up to 600 MB/sec 最多 750 MB/秒Up to 750 MB/sec

高级 SSD 托管磁盘:每磁盘限制Premium SSD managed disks: Per-disk limits

高级 SSD 大小Premium SSD sizes  P1P1 P2P2 P3P3 P4P4 P6P6 P10P10 P15P15 P20P20 P30P30 P40P40 P50P50 P60P60 P70P70 P80P80
磁盘大小 (GiB)Disk size in GiB 44 88 1616 3232 6464 128128 256256 512512 1,0241,024 2,0482,048 4,0964,096 8,1928,192 16,38416,384 32,76732,767
每个磁盘预配的 IOPSProvisioned IOPS per disk 120120 120120 120120 120120 240240 500500 1,1001,100 2,3002,300 5,0005,000 7,5007,500 7,5007,500 16,00016,000 18,00018,000 20,00020,000
每个磁盘预配的吞吐量Provisioned Throughput per disk 25 MB/秒25 MB/sec 25 MB/秒25 MB/sec 25 MB/秒25 MB/sec 25 MB/秒25 MB/sec 50 MB/秒50 MB/sec 100 MB/秒100 MB/sec 125 MB/秒125 MB/sec 150 MB/秒150 MB/sec 200 MB/秒200 MB/sec 250 MB/秒250 MB/sec 250 MB/秒250 MB/sec 500 MB/秒500 MB/sec 750 MB/秒750 MB/sec 900 MB/秒900 MB/sec
每个磁盘最大的突发 IOPSMax burst IOPS per disk 3,5003,500 3,5003,500 3,5003,500 3,5003,500 3,5003,500 3,5003,500 3,5003,500 3,5003,500
每个磁盘最大的突发吞吐量Max burst throughput per disk 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec 170 MB/秒170 MB/sec
最大突发持续时间Max burst duration 30 分钟30 min 30 分钟30 min 30 分钟30 min 30 分钟30 min 30 分钟30 min 30 分钟30 min 30 分钟30 min 30 分钟30 min
符合预留条件Eligible for reservation No No No No No No No No 是,最多一年Yes, up to one year 是,最多一年Yes, up to one year 是,最多一年Yes, up to one year 是,最多一年Yes, up to one year 是,最多一年Yes, up to one year 是,最多一年Yes, up to one year

非托管虚拟机磁盘Unmanaged virtual machine disks

标准非托管虚拟机磁盘:每磁盘限制Standard unmanaged virtual machine disks: Per-disk limits

VM 层VM tier 基本层 VMBasic tier VM 标准层 VMStandard tier VM
磁盘大小Disk size 4,095 GB4,095 GB 4,095 GB4,095 GB
每个持久性磁盘最大 8 KB IOPSMaximum 8-KB IOPS per persistent disk 300300 500500
执行最大 IOPS 的最大磁盘数Maximum number of disks that perform the maximum IOPS 6666 4040

高级非托管虚拟机磁盘:每个帐户的限制Premium unmanaged virtual machine disks: Per-account limits

资源Resource 限制Limit
每个帐户的总磁盘容量Total disk capacity per account 35 TB35 TB
每个帐户的总快照容量Total snapshot capacity per account 10 TB10 TB
每个帐户的最大带宽(传入 + 传出)1Maximum bandwidth per account (ingress + egress)1 <=50 Gbps<=50 Gbps

1“传入”指从请求发送到存储帐户的所有数据。1Ingress refers to all data from requests that are sent to a storage account. “传出”指从存储帐户接收的响应中的所有数据。Egress refers to all data from responses that are received from a storage account.

高级非托管虚拟机磁盘:每磁盘限制Premium unmanaged virtual machine disks: Per-disk limits

高级存储磁盘类型Premium storage disk type P10P10 P20P20 P30P30 P40P40 P50P50
磁盘大小Disk size 128 GiB128 GiB 512 GiB512 GiB 1,024 GiB (1 TB)1,024 GiB (1 TB) 2,048 GiB (2 TB)2,048 GiB (2 TB) 4,095 GiB (4 TB)4,095 GiB (4 TB)
每个磁盘的最大 IOPSMaximum IOPS per disk 500500 2,3002,300 5,0005,000 7,5007,500 7,5007,500
每个磁盘的最大吞吐量Maximum throughput per disk 100 MB/秒100 MB/sec 150 MB/秒150 MB/sec 200 MB/秒200 MB/sec 250 MB/秒250 MB/sec 250 MB/秒250 MB/sec
每个存储帐户的最大磁盘数Maximum number of disks per storage account 280280 7070 3535 1717 88

另请参阅See also

Azure 订阅和服务限制、配额和约束Azure subscription and service limits, quotas, and constraints