免费 · 网络与 IT 基础设施
RAID 计算器.
计算 RAID 0、1、5、6、10、50、60 和 ZFS RAIDZ 的可用容量、利用率、容错能力、IOPS、吞吐量和重建时间。
CALCULATED IN YOUR BROWSER · NOTHING IS UPLOADED
Hard drives under production load often rebuild at 50–150 MB/s.
Usable capacity96 TB87.31 TiB as shown by most systems
- Raw capacity (including spares)
- 128 TB
- Storage efficiency
- 75 %
- Drive failures survived
- 2
- Mixed random IOPS
- 900 70 % reads, write penalty 6
- Random read IOPS
- 1,200
- Random write IOPS
- 200
- Sequential read
- 1,500 MB/s
- Sequential write
- 1,500 MB/s
- Rebuild of one drive
- 44.4 h
Other levels with 8 drives of 16 TB
| Level | Usable | Efficiency | Drive failures survived | Mixed IOPS |
|---|---|---|---|---|
| RAID 0 (stripe) | 128 TB | 100 % | 0 | 1,200 |
| RAID 1 (mirror, all drives) | 16 TB | 13 % | 7 | 885 |
| RAID 10 (striped mirrors) | 64 TB | 50 % | 1–4 | 1,020 |
| RAID 5 (single parity) | 112 TB | 88 % | 1 | 930 |
| RAID 6 (double parity) | 96 TB | 75 % | 2 | 900 |
| RAID 50 | 96 TB | 75 % | 1–2 | 930 |
| RAID 60 | 64 TB | 50 % | 2–4 | 900 |
| ZFS RAIDZ1 (one vdev) | 112 TB | 88 % | 1 | 150 |
| ZFS RAIDZ2 (one vdev) | 96 TB | 75 % | 2 | 150 |
| ZFS RAIDZ3 (one vdev) | 80 TB | 63 % | 3 | 150 |
| JBOD / span (no redundancy) | 128 TB | 100 % | 0 | 150 |
- RAID protects against drive failure, not deletion, ransomware, fire or controller faults. Keep separate backups.
- Drive makers use decimal terabytes (10¹² bytes); operating systems often show binary TiB.
使用方法: RAID 计算器
输入数据或选择文件，调整设置并生成结果。复制或下载之前，请检查结果。
限制与支持格式
输入内容在您的设备上处理。
英语技术说明
Assumes identical drives. ZFS padding and slop space, controller caches and filesystem overhead are not included. RAID is not a backup. Everything is calculated in your browser; nothing is sent or probed on the network.
Usable capacity = data drives × size. Mixed IOPS = raw IOPS × read % + raw IOPS × write % ÷ write penalty. A RAIDZ vdev delivers about one drive’s random IOPS. Rebuild time = drive size ÷ rebuild speed.
8 × 16 TB drives in RAID 6 give 96 TB (87.3 TiB) usable, survive 2 drive failures and rebuild one drive in about 44 hours at 100 MB/s.