I'm in the market for a RAID card and really like Intel hardware. I'm looking to build two separate arrays:
- One RAID-5 array consisting of at least 3-4 2TB 7200RPM hard disks.
- One RAID-0 array consisting of 4 Samsung SSDs.
I'm aware of some of the differences between cards such as cache size (pretty straightforward) and connector count (not so clear). Thus, I have a few questions on how best to choose a RAID card.
What does connection count really mean? I'll be running all SATA III drives and I'd like some headroom to expand on the RAID-5 array if I ever need more storage. I'm confused by the SAS to SATA conversion. Does having 4 internal SAS ports mean that I'll only need to use two of those ports, one for each array with a converter to split each SAS cable into a bunch of SATA cables? Is SAS capable of transmitting the high read/write speeds of my wicked RAID-0 SSD array?
It seems that there's a huge range of price in the Intel hardware RAID series, but I can't seem to figure out why.