SSD to HDD Imaginary Equivalent?

[DropBear]

I've been looking over the specs of my new SSD drive, I went with the Samsung 840 Pro 256GB, and I have done some calculations and they seem like ridiculous numbers. ((41,675,288 HDDs?)) If you were dead set on getting similar performance out of a series of HDDs, all money, software and time aside What kind of crazy rig would you need to match the performance of today's average solid state drive? Have I made a horrible error?

 

[ingtar33]

well the fastest hard drives are velociraptors, and they're about 14% of the speed of a SSD, so doing the math you'd need 7 WD velociraptors in a RAID 0 array to match an SSD.

 

[k1114]

You can never really achieve ssd performance on a hdd simply because that actuating arm will never be as fast as electrical signals. You could however match sequential which is pretty easy. A ssd will max the sata 3 bandwidth and so will 5 hdds in raid 0. Now if you are talking randoms or io, then a couple hundred would do. How'd you get 41m?

 

[popatim]

A velociraptor is far from being the fastest hard drive. LoL

4 of seagates newer 7200rpm 3tb drives in raid 0 would exceed the sequential read/writes of the 840 pro. A raid0 pair does close to 400MB/s