I'm building a new FreeNAS server that I'm looking to use for 4k video editing (fast copy/streaming of large files). I've got everything built out and I thought I had it spec'd and designed correctly but I'm seconding guessing myself now since I'm not seeing full bandwidth utilization.
Here's my setup:
Now it was my understanding that with this backplane and HBA I would get full bandwidth to all SSDs. In my case right now I only have 8 SSDs so I figured I would only need a single 9300-8i HBA, is that true?
I have FreeNAS installed and I'm looking at the outputs of each disk with smartctl -a /dev/da* and I see that only 4/8 disks are at full 6 Gb/s, the other 4 are at 3 Gb/s. Am I doing something wrong here? I have 2 SFF-8643 to SFF-8087 cables connected to the first 2 connectors on the backplane that run to the two connectors on my single 9300-8i. Shouldn't all 8 of these disks be at 6 Gb/s?
Here's my setup:
- SuperMicro CSE-216
- X9DRi-F Motherboard
- 2x E5-2630v2
- 128GB ECC Ram
- SAS216A Backplane
- 1x LSI 9300-8i HBA IT Mode
- 8x Intel S3700 SSDs
Now it was my understanding that with this backplane and HBA I would get full bandwidth to all SSDs. In my case right now I only have 8 SSDs so I figured I would only need a single 9300-8i HBA, is that true?
I have FreeNAS installed and I'm looking at the outputs of each disk with smartctl -a /dev/da* and I see that only 4/8 disks are at full 6 Gb/s, the other 4 are at 3 Gb/s. Am I doing something wrong here? I have 2 SFF-8643 to SFF-8087 cables connected to the first 2 connectors on the backplane that run to the two connectors on my single 9300-8i. Shouldn't all 8 of these disks be at 6 Gb/s?
