1. What is IOPS?
- IOPS = Input/Output Operations Per Second.
- It measures how many read/write operations your storage can perform per second.
- Think of it like the speed of requests — how many “small jobs” the disk can handle each second.
📌 Example:
- If your workload needs 10,000 reads/writes per second, you need storage that supports 10,000 IOPS.
2. What is Throughput?
- Throughput = MB per second (MB/s).
- It measures how much data can be transferred per second.
- Think of it like the bandwidth — how much information can flow through your storage system.
📌 Example:
- If your workload processes large files (e.g., streaming video, backups), throughput matters more than IOPS.
3. How They Differ
- IOPS = number of operations per second
- Throughput = amount of data per second
💡 You can have high IOPS but low throughput, and high throughput but low IOPS, depending on the workload.
Example:
| Workload Type | IOPS Need | Throughput Need |
|---|---|---|
| Small database queries | High | Low |
| Large file transfers | Low | High |
| Mixed workloads | Medium | Medium |
4. Relationship
They are related but not equivalent:
Throughput (MB/s)≈IOPS×Average I/O Size (MB)
📌 Example:
- If you have 10,000 IOPS and each I/O is 16 KB:
10,000×16KB=160,000KB/s≈156.25MB/s
Summary:
- IOPS → speed in terms of operations
- Throughput → speed in terms of data volume
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