Raid array of 12gb/s and 6gb/s sas drives?

Question

RAID

Colleagues, good afternoon!
Need your advice.
There is a Huawei RH2288H V3 server on a RAID LSI SAS3108 controller and there is a pack of disparate disks left:
4 pcs with part number 02311HAL (2 of which are Toshiba AL14SEB090N and 2 HGST HUC101890CSS200) and 4 pcs with part number 02310YCT (Seagate ST900MM0006)
They differ in bus speed - 1 for 02311HAL and 6gb/s for 02310YCT.
Please tell me who had experience, what consequences I will get when combining this all into one array.

Answer 1

Everything depends on the tasks. If you have tasks that require copying between disks, for example, or you get data from some kind of fast hardware decoder, or you have network performance above 10Gbps, then you might feel the difference. If not, then 6 Gb/s performance per channel in RAID is unlikely to be a bottleneck in your system to worry about, rather, you should look for problems in other characteristics mismatch.