i have a server running currently on an athlon 5350 with 32gb (2x16gb) ram and 8 3tb sas drives in software raid 6 connected to an lsi sas3081e-r raid card. it has been crashing frequently and acting strangely. when i built this server i was not aware that the raid card doesnt support drives above 2tb capacity. in the web interface under storage/disks it shows the drives as 2.73tib. under storage/raid management it says the capacity of the raid volume is 16.37tib. it is my understanding that the lsi sas3081e-r doesnt support disks above 2tb because it uses mbr instead of gpt. i thought that in this case the drives would show up as only having 2tb accessible. if i understood what is happening i would just get a new raid card that supports the drives and replace the old one. i am concerned that if i do this the problems ive been having will persist or i will lose some or all of the data on the drives.
i currently have 4.6tb stored on the server. i noticed that when i access the file system from my computer and check the size of a folder it gives a value much lower than the actual size (one folder than i know has more than 3tb shows up as 1.28tb). strangely when i go into the folder and check the file size of all the subfolders i get a larger but still incorrect number. is this because of the raid card issue or is it something else?
i would like to know whats going on with the system and what i should do to fix it.