- Dec 28, 2015
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I have two 3TB HDDs in RAID 1 in an external enclosure on my old PC with data that's important that I not lose. I'm backing up that data, formatting those drives, and setting up a new RAID system in my newly built computer. I'll soon have 6, 3TB HDDs (64MB cache and 7200 RPM, if it matters).
I'm trying to decide between RAID 5 and RAID 10.
Redundancy is important to me - both allow at least 1 drive to fail. Those are odds I'm OK with (I'll occasionally make external backups as well).
RAID 5 will give me 5x read speeds and no write speed increase. RAID 10 will give me 6x read and 3x write. RAID 10 wins in that respect but I don't think the difference will be that important for me.
RAID 5 will gives me 15TB of space rather than 9TB with RAID 10. RAID 5 obviously wins in this respect. Not that this is a negligible amount but I don't mind buying more storage space later on but that brings me to my last point.
Lastly, I want to know if I can add drives later. Ignore the cost of adding 1 or more drives (I understand that 10 needs an even number of drives while 5 doesn't). From what I've found, it depends on the RAID controller. My goal is to use my motherboard to control my RAID settings and I don't know what it would take to add drives or if I'm even able to.
If I can only add drives to the one setup that allows drives to be added, I'll probably use that setup. If both or neither allow drives to be added, I'll probably go with RAID 10.
I'd appreciate any help you can provide. Thank you for your time.
I'm trying to decide between RAID 5 and RAID 10.
Redundancy is important to me - both allow at least 1 drive to fail. Those are odds I'm OK with (I'll occasionally make external backups as well).
RAID 5 will give me 5x read speeds and no write speed increase. RAID 10 will give me 6x read and 3x write. RAID 10 wins in that respect but I don't think the difference will be that important for me.
RAID 5 will gives me 15TB of space rather than 9TB with RAID 10. RAID 5 obviously wins in this respect. Not that this is a negligible amount but I don't mind buying more storage space later on but that brings me to my last point.
Lastly, I want to know if I can add drives later. Ignore the cost of adding 1 or more drives (I understand that 10 needs an even number of drives while 5 doesn't). From what I've found, it depends on the RAID controller. My goal is to use my motherboard to control my RAID settings and I don't know what it would take to add drives or if I'm even able to.
If I can only add drives to the one setup that allows drives to be added, I'll probably use that setup. If both or neither allow drives to be added, I'll probably go with RAID 10.
I'd appreciate any help you can provide. Thank you for your time.
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