20 disk 18 TB RAID 6 storage based on Debian Linux
July 21, 2009 | categories:
Storage
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This is my NAS storage server based on Debian Linux. It uses software RAID and 20 one terrabyte hard drives. It provides a total usable storage capacity of 18 terrabytes in a single RAID 6 array.
One of the remarkable side effects of using 20 drives within a single array is the read performance of over one gigabyte per second.
| Case: | Norco RPC-4020 |
| Processor: | Core 2 duo E7400 @ 2.8GHz |
| RAM: | 4 GB |
| Motherboard: | Asus P5Q-EM DO |
| LAN: | Intel Gigabit |
| PSU: | |
| Controller: | HighPoint RocketRAID 2340 (16) and on-board controller (6). |
| Disks: | 20 x Samsung Spinpoint F1 (1 TB) and 2 x FUJITSU MHY2060BH (60 GB) |
| Arrays: | Boot: 2x 60 GB RAID 1 and storage: 20 x 1 TB RAID 6 |
| RAID setup: | Linux software RAID using MDADM. |
| RAM: | 4 GB |
| Read performance: | 1.1 GB/s (yes this is correct, not a typo) |
| Write performance: | |
| OS: | Linux Debian Squeeze 64-bit |
| Filesystem: | XFS (can handle > 16 TB partitions.) |
| Rebuild time: | about 5 hours. |
| UPS: | Back-UPS RS 1200 LCD using Apcupsd |
| Idle power usage: | about 140 Watt |
