Home > Storage > PowerFlex > White Papers > Dell APEX Block Storage for Azure: Protecting SQL Server Data with Dell APEX Protection Storage > Prerequisites
Azure provides several types of disk storage with different performance characteristics such as IOPS, throughput, latency, and so on.
Select the appropriate DDVE virtual machine instance type according to capacity and workload.
The following table shows the memory and storage requirements:
Instance Type | Standard_D4DS_V5 | Standard_D8DS_V5 | Standard_D16DS_V5
| Standard_D32DS_V5 |
4 | 8 | 16 | 32 | |
Memory (GB) | 16 | 32 | 64 | 128 |
Storage capacity | Up to 16 TB | Up to 32 TB | Up to 96 TB | Up to 256 TB |
Metadata disks | Premium SSD Up to 2 X 1 TB | Premium SSD Up to 4 X 1 TB | Premium SSD Up to 10 X 1 TB | Premium SSD Up to 13 X 2 TB |