Help Center/ Elastic Volume Service/ Service Overview/ Extreme SSD V2 Disks (OBT)
Updated on 2025-08-30 GMT+08:00
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Extreme SSD V2 Disks (OBT)

Extreme SSD V2 disks deliver ultra-high IOPS, ultra-high throughput, and ultra-low latency. They are designed for latency-sensitive mission-critical applications and provide sustained IOPS performance.

You can buy Extreme SSD V2 disks of a given capacity with the IOPS tailored to your workloads. The disk capacity and performance are decoupled.

Extreme SSD V2 disks are now in the open beta test (OBT) only in the AP-Singapore region. You can submit a service ticket to apply for the OBT if needed.

Performance

Table 1 Extreme SSD V2 performance

Parameter

Extreme SSD V2

Max. capacity
  • System disk: 1,024 GiB
  • Data disk: 32,768 GiB

Short description
  • High-performance SSD-backed disks designed for latency-sensitive, mission-critical applications
  • Sustained IOPS performance
  • More than 128,000 IOPS or 1,000 MiB/s of throughput

Typical use cases
  • Databases
    • Oracle
    • SQL Server
    • ClickHouse
  • AI workloads

Max. IOPS

256,000

Max. throughput

4,000 MiB/s

Burst IOPS limit

N/A

Disk IOPS calculation formula

You preconfigure an IOPS ranging from 100 to 256,000. This IOPS must also be less than or equal to 1,000 times the capacity.

Disk throughput calculation formula

≤ (Preconfigured IOPS/16) MiB/s

Single-queue access latency

Sub-milliseconds

API name

NOTE:

This API name is the value of the volume_type parameter in the EVS API. It does not represent the type of the underlying hardware device.

ESSD2

Consideration

If you preconfigure over 128,000 IOPS or desire over 3,000 MiB/s peak throughput, you need to attach the Extreme SSD V2 disk to an AC7 instance.

Configuration

  1. Go to the Buy Disk page.
  2. Configure the disk parameters.

    • Choose the Extreme SSD V2 type and enter a desired disk size.
    • Configure a desired IOPS.
    • Configure other parameters by referring to Purchasing an EVS Disk.

  3. Click Next.

    1. Check the disk details on the confirmation page.
    2. Confirm the information and click Submit. The system displays a message indicating request submitted successfully.
    3. Click Back to Disk List to return to the Elastic Volume Service page.

Performance Modification

If the disk performance no longer meets your service requirements, you can modify its IOPS by changing the disk type.

Billing

Both the capacity and IOPS of Extreme SSD V2 disks are billed on a pay-per-use basis.

The price of an Extreme SSD V2 disk consists of the capacity price + IOPS price.

Billing Examples

Suppose you purchased a 100-GiB Extreme SSD V2 disk with a preconfigured IOPS of 5,000.

The capacity unit price is $0.001153 per hour per GiB and the IOPS unit price is $0.00043 per hour per IOPS:

24 hours after purchasing the disk, you will be billed for $54.37 (Capacity charge + IOPS charge = 100 x 0.001153 x 24 + 5,000 x 0.00043 x 24 = 2.77 + 51.6 = 54.37).