Author Topic: Hardware stability for RAID purposes  (Read 2665 times)

Offline Brahim

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Hardware stability for RAID purposes
« on: July 05, 2013, 07:20:08 am »
When it comes to building storage boxes, most users tend to build white boxes with parts leftover or discarded from other systems.
This is fine when the box is purposed for light usage, but for RAID usage, additional testing is required to ensure that the box is fit for the task.

Your hardware might be stable for surfing the net, running prime95, or running a lightweight web server.
However, RAID is all about I/O stress and a combined assault on your system.
Accessing your disks one or two at a time is one thing, having them all spin up for parity calculation is another.

The best RAID tests for your system are the parity creation and verification tasks.
They will test:
  • Your memory subsystem, and issues not seen under light usage might creep up. If there are minor memory issues, they will be magnified given the amount of data that will be pushed through your system.
  • How well your disk controller behaves during an extended I/O stress (many cheap controllers flake if stressed too long - could be heat related).
  • The stability of your power supply will be tested as most components in your system will be active and sucking more power

So, leverage those tasks to properly test your systems. Check your OS event logs for possible warnings on your disks.