I'm hoping someone will respond who has had a lot of direct experience with Windows software RAID 1.
For the last 6 years, I've been a happy RAID 1 camper using my Intel motherboard's builtin ICH RAID controller; which worked quite well. I didn't even notice when the disks were synching back.
However, recently I switched to two 4TB HDD's. Unfortunately, my current embedded controller can only RAID disks which have a a maximum capacity of 2TBs; luckily, that size limit doesnt apply to non-RAID disks.
My question is if there's actually a noticeable CPU/memory hit when using software RAID during heavy reading/writing; such as when recording multiple TV channels at the same time AND/OR when the disks are synching. I never noticed any significant resource utilization hit when using my ICH controller under any circumstance.
My next question... is there are dual HDD enclosure under $200 that offers a great builtin RAID 1 capable controller that's compatible with 4TB HDDs? Using a RAID controller PCI card is out of the question since I'm all out of PCI slots.