# What is IOPS?

## Introduction

**IOPS** (Input/Output Operations Per Second) is a key metric for evaluating storage performance in hard disks (HDD) and solid state drives (SSD). It is crucial for web hosting, virtual servers (VDS), and dedicated servers (Dedicated) as it affects the system's processing speed and overall performance. 

**IOPS** measures the number of I/O operations a storage device can perform in one second, typically a read or write of a data block.

## Meaning

On servers, **IOPS** determines how quickly the server can read and write data, which is essential for high-performance applications like large databases or corporate websites. SpaceCore offers no limits on **IOPS** for virtual and dedicated servers, allowing full utilization of drives without restrictions.

{% hint style="success" %}
There are no limits on the number of **IOPS** on virtual and dedicated servers from **SpaceCore**. This allows you to use the drives to the fullest without artificial restrictions.
{% endhint %}

## Impact on IOPS

* **Disk Speed**: SSDs provide much higher IOPS compared to HDDs.

{% hint style="info" %}
SpaceCore uses only SSD and NVMe drives for virtual servers, having phased out HDDs for VDS/VPS.
{% endhint %}

* **Data Block Size**: Larger data blocks can reduce **IOPS** due to longer processing times per operation.
* **Command Queue**: The depth of the command queue, or the number of operations waiting to be processed, also affects **IOPS**.

**IOPS** is a critical performance indicator for storage systems, influencing the speed and performance of all server types.


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