ericgcollyer Posted March 27, 2012 Posted March 27, 2012 See Topic Title. Which has better read/write performance? Share this post Link to post Share on other sites More sharing options...
Waco Posted March 27, 2012 Posted March 27, 2012 RAID 1 by far, especially with small writes. Share this post Link to post Share on other sites More sharing options...
El_Capitan Posted March 27, 2012 Posted March 27, 2012 Depends on what you're wanting them for. I'd always go for RAID 10 or RAID 1 over RAID 5, but that's just me. Share this post Link to post Share on other sites More sharing options...
bigball1 Posted March 27, 2012 Posted March 27, 2012 (edited) raid 1 for good read speeds ok write speeds raid 0 for good read write speeds raid 5 good read speeds but has poor write speeds Edited March 28, 2012 by Bigball1 Share this post Link to post Share on other sites More sharing options...
ir_cow Posted March 28, 2012 Posted March 28, 2012 i suggest raid 1 unless you are doing work that requires more speed. raid-1- 1 drive can fail, hence redundant raid-0 - either drive goes bad and you lose all the data, none recoverable raid-5 - speed of raid-0 BUT if more than 1 drive goes bad at a time you lose everything if you limited to only 3 drives i would go with raid-5 for the speed and simi redundancy, if you can get more (like 4 or more) go with raid-6 (basically raid-0 with redundancy) otherwise, like i said at the start, if you don't need speed and want to save money, just get 2 drives and go with raid-1. Share this post Link to post Share on other sites More sharing options...
ericgcollyer Posted March 28, 2012 Posted March 28, 2012 Thanks for all the replies. I've noticed that I have become somewhat of a leech in the forum, asking a whole lot more questions than I am answering. I will change as of today, you guys are the best. I'm not sure if RAID 5 actually has improved write speeds. I currently have a RAID 5 array, but seem to get slow write speeds compared to a single drive I have in my system. I was just trying to get some opinions from other system builders. Thanks for all the help you have given me over the past couple of months. Share this post Link to post Share on other sites More sharing options...
Waco Posted March 28, 2012 Posted March 28, 2012 RAID 1 is preferable in every way over RAID 5 when you have few drives. Unless you're doing 4+ drives in RAID 5 it's pointless. I would also suggest avoiding RAID 5 entirely if your drives are 1 TB or more because of the chances of a rebuild failure. Share this post Link to post Share on other sites More sharing options...
MercuryDoun Posted March 28, 2012 Posted March 28, 2012 both raid 5 and raid 1 have write overhead that slows writes, but they both have quite good read speeds. At least with modern raid controllers. And dont do raid 6... its not like raid 0 with redundancy... its raid 5 except with two parody drives instead of only one... Its even slower than raid 5 is! Really the easiest way to decide is, even number of drives(2 or 4) go with RAID1 or 1+0(AKA 10), odd number of drives(3 or 5) go with raid-5. This isn't knew information, im mostly just repeating what everyone else has already said, but another opinion never hurts! Share this post Link to post Share on other sites More sharing options...
Waco Posted March 28, 2012 Posted March 28, 2012 Well RAID 1 writes as fast as a single drive. RAID 5 can write about the same for large files but it's slooooow for small writes. Share this post Link to post Share on other sites More sharing options...
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