Theoretical limit of Hard drives on PCIE 2.0 card
Last response: in Storage
My question has to do with creating lets say a RAID 0 on a PCIE 2.0 8x controller card, this card http://www.newegg.com/Product/Product.aspx?Item=N82E168....
If I set up a RAID 0 with 4 SSD SATA 6.0 500 MB/S R/W hard drives, will I be limited by the SATA controller, or will I be able to take advantage of the speeds of the PCIE 2.0 bus? If so, how come? eitherway.
If I set up a RAID 0 with 4 SSD SATA 6.0 500 MB/S R/W hard drives, will I be limited by the SATA controller, or will I be able to take advantage of the speeds of the PCIE 2.0 bus? If so, how come? eitherway.
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Best solution
PCIe 2.0 has a 500MB/s per lane limit, so an x8 card would be 4000MB/s, see HERE.
SATA III transfers up to 6Bbps, or about 600MBps with overhead, see HERE.
So 4 SSDs saturating their SATA III connection would still not exceed the PCIe 2.0 specification by a significant margin. Even in the real world it doesn't appear that your peak rates would be hindered.
SATA III transfers up to 6Bbps, or about 600MBps with overhead, see HERE.
So 4 SSDs saturating their SATA III connection would still not exceed the PCIe 2.0 specification by a significant margin. Even in the real world it doesn't appear that your peak rates would be hindered.
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