8 Krypton

Re: RAID level for SATA 1TB on CX4-120


If the CX4-120 is only us for backup purpose.I suggest you to set the cache page size to 16kb.

Doing this will allow you to sent up to 2MB to the back end in one operation.

With a 16Kb cache page, a 4+1 with a 256 Kb stripe size will get 8 stripes written in one operation, 4 if you have a 8+1.

4 RG 7+1 + 1 HS should be a good solution for your configuration.