Before you begin:
Like any storage device, disk configuration is a factor, including:
• Disk speed (SSD/15k/10k/7200)
• RAID Level
• Write-back cache (Hardware RAID with BBU, Linux bcache, EMC FAST cache)
• Memory for read cache
In addition for the above, dedup appliances need RAM to store the contents of the hash. For SDFS the rule is:
• (volume size / chunk size) * 25. This equated to 256MB per TB for a 128k chunk size, and 8GB per TB for a 4k chunk size.
• You also need CPU to process the data