What are the different widely used RAID levels and when should I consider them?
We are going to setup a storage solution for our security surveillance software. We are going to buy servers from http://www.hetzner.de and we would like to deploy RAID configuration using the following combination: RAID CARD = MegaRAID SAS 9260-4i HARD DISKS = 4 X 3TB, Seagate Constellation ES.2 ST33000650NS
We have two different requirements for two different servers (same hardware) A. Write jpeg image files ranging from 30KB to 100KB at a speed of 100 files per second. At the same time we also deleting the old imagery at the same speed. B. Write 40MB video files 1MB/sec to 3MB/sec and we divide this throughput into 100 files at a time. At the same time we also deleting the old imagery at the same speed.
In the past we have been observing disk performance issues on RAID 5 with different hardware. I would request you to give us advice on:
- Appropriate RAID configuration(s) that suits our two requirements separately.
- What possible I/O thought we can get on your suggested configuration.
- Send us I/O benchmark data you may have with similar hardware.
Hardware Specs: CPU : Intel® Core™ i7-3930K Hexacore RAM : 64 GB DDR3 Mother board : EX 10: Intel DX79TO Hard disks : 4X3TB Seagate Constellation ES.2 ST33000650NS RAID CARD : LSI MegaRAID SAS 9260-4i Operating System :windows 2008 (possibly 2012)