R4 Won't Register 6Gbs SSD Drives/Slow Read/Write Speeds

  • Last Post 18 May 2020
Trina Eve posted this 08 December 2018


In the process of raiding my Pegasus 2 R4, I was doing speed tests w/ Blackmagic and I was getting pretty slow read/write speeds for two brand new Samsung SSD 860 EVO 1TB drives. Upon further investigation, in the Promise Utility the drives are only read as SATA 3Gb/s instead of SATA 6Gb/s. I put those same 2 drives in a diiferent R4 & they correctly came up as 6Gb/s. I've tried updating the firmware & doing a factory reset, no dice. Promise Support noticed that the TRIM is on for the R4 only reading 3Gbs. I tried disabling TRIM with ctrl -a mod -s "trim=disable" via Terminal and that didn't work either. Any suggestions? I've tried downgrading firmware as well as using Mac's sudo command and that hasn't worked either. Please help :)

Trina xxx

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  • chandhiran polianisamy
chandhiran polianisamy posted this 18 May 2020

Hi, did you find a solution to yr issue? I am getting 3gb/s on my samsung 860evo.


Pegasus 2 r4
Mac pro Dustbin 2013