Storage Performance

You can chooose from the following Block Storage elements:

• Hard Disk Drives (HDD): Traditional hard disk drives for storing data that may not require high performance. Suitable for backups, archives, and cold storage.

• Solid-State Drives (SSD): High-performance solid-state drives for storing data that requires low latency and high throughput. Suitable for databases, virtual machines, and applications.

Performance attributes

The following attributes are used to determine the storage performance:

• Read/write speed, sequential: The read/write speed for large blocks of data stored in a continuous sequence on the disk.

• Read/write speed, full random: The read/write speed for large blocks of data that is stored non-sequentially on the disk.

  • Regular: The predictable performance of the storage device when handling random read or write operations.

  • Burst: The short-term peak performance of the storage device when handling random read or write operations.

• Read speed, full random: The read speed for large blocks of data stored non-sequentially on the disk.

• Write speed, full random: The write speed for large blocks of data stored non-sequentially on the disk.

HDD storage

The following performance and configurations apply per HDD volume. The performance of HDD storage is static and independent of its volume size.

Storage Performance	HDD Storage
Read/write speed, sequential	200 Mb/s at 1 MB block size
Read/write speed, full random, regular	1,100 IOPS at 4 kB block size
Read/write speed, full random, burst	2,500 IOPS at 4 kB block size

HDD storage volume

The following HDD storage volume value applies.

Storage Volume	HDD Storage
Minimum size per volume	1 GB
Maximum size per volume	4 TB

Larger volumes can be made available on request. For more information, contact IONOS Cloud Support.

SSD storage

The SSD storage are available in two performance classes:

• SSD Premium

• SSD Standard

The following performance and configurations apply per SSD Premium and SSD Standard.

Storage Performance	SSD Premium	SSD Standard
Read/write speed, sequential	1 Mb/s pro GB at 1 MB block size	0,5 Mb/s pro GB at 1 MB block size
Read speed, full random	75 IOPS per GB at 4 KB block size	40 IOPS per GB at 4 KB block size
Write speed, full random	50 IOPS per GB at 4 KB block size	30 IOPS per GB at 4 KB block size

SSD storage volume

The following SSD storage volume value applies.

Storage Volume	SSD Premium	SSD Standard
Minimum size per volume	1 GB	1 GB
Maximum size per volume	4 TB	4 TB
Maximum Read/write speed, sequential	600 Mb/s per volume at 1 MB block size	300 Mb/s per volume at 1 MB block size
Maximum Read speed, full random	45,000 IOPS at 4 KB block size and min. 4 Cores, 4 GB RAM per volume	24,000 IOPS at 4 KB block size and min. 2 Cores, 2 GB RAM per volume
Maximum Write speed, full random	30,000 IOPS at 4 KB block size and min. 4 Cores, 4 GB RAM per volume	18,000 IOPS at 4 KB block size and min. 2 Cores, 2 GB RAM per volume

Larger volumes can be made available on request. For more information, contact IONOS Cloud Support.

Recommendations

• The SSD storage performance is directly related to the SSD storage volume size. To get the full benefits of high-speed SSDs, we recommend booking SSD storage units of at least 100 GB.

• You can use smaller volumes for your VDC, but performance will be suboptimal, compared to that of the larger units.

• When storage units are configured in the DCD, expected performance is predicted based on the volume size. For storage volumes of more than 600 GB, the performance is capped at the maximum as specified in the SSD storage volume.