Is it faster then ssd….
or does the 6 gbps do a better job?

SAS is “better” than SATA.

1. Data speed is faster.
- SATA 1 is 1.5 gbps
- SATA 2 is 3.0 gbps
- SAS is 6.0 gbps

2. SAS hard drives have capability to run at higher rpm approx. 15,000. SATA is about 10,000.
- This is due to the size of the form factor.
- Platter size is 2.5 instead of 3.5 on SATA which means shorter access times.

3. SAS uses less energy. Not sure how much but it’s probably quite a bit.

As for SSD which is Solid State Drive. This is a different type of hard drive. SATA and SATA are the connection type for “Hard drives”

SSD runs on SATA II, but I’m not sure on the other types of interfaces. SSD is a lot faster than hard drive since there’s no wait time on a spinning disc.

I’m not a fan of SSD yet. According to Wikipedia, they have limited write cycles. So the flash memory cells will wear out eventually.