SSD. Full speed is higher, but it's also the responsiveness that comes from reading many small files so quickly. You'll never go back to a spinner!
S
I think people here mistakenly use synthetic benchmarks as proof it's faster.
Real world performance is very different from benchmarks, you won't find a significant speed difference between an SSD and RAID HDD's.
I think people here mistakenly use synthetic benchmarks as proof it's faster.
Real world performance is very different from benchmarks, you won't find a significant speed difference between an SSD and RAID HDD's.
In sequential reads from the outermost part of the platter (first partition), you COULD get something like 160-220 MB/s from the HDDs. A single SSD is ONLY likely to be 2-3x as fast in such a case.
but a R0 of possibly 4 15k drives will top an IO off a single SSD.
unless ur running a SAS R0 array with 15K spinners on a dedicated IO card.
however i doubt the op will run that... lol..
but a R0 of possibly 4 15k drives will top an IO off a single SSD.
I don't know of a single drive that does better than 150MB/s in any sustained transfers. They also tend to be stuck somewhere around 0.75MB/s on random reads at 4k. So when pretty much any SSD today can sustain read at 550MB/s and random read at least 20MB/s and more like 80MB/s for a decent one it means you need at least 4 drives to exceed the sustained speed and 100+ of them to get the random access. In practice it doesn't scale that well.
The trade off today at a similar price point is storage space verses speed. At the very low end pricing there are only HDDs. That is about all there is to the market now, HDDs are done from a performance perspective and ever decreasing sizes will soon solve the size problem as well.
unless ur running a SAS R0 array with 15K spinners on a dedicated IO card.
however i doubt the op will run that... lol..
but a R0 of possibly 4 15k drives will top an IO off a single SSD.
Not even close. I can verify from real-world experience that a good SSD will completely blow an array of 18 15KRPM HDDs out of the water.
Also, if you are going to go the multiple HDDs route for a non-boot drive, I think the various unraid software solutions like DrivePool will actually trounce RAID 0. But still nothing beats an SSD.