The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    mSATA throughput bottlenecking Raid0 SSDs?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by moviemarketing, Oct 13, 2014.

  1. moviemarketing

    moviemarketing Milk Drinker

    Reputations:
    1,036
    Messages:
    4,247
    Likes Received:
    881
    Trophy Points:
    181
    With current mSATA drives on the market, at what point does the speed of Raid0 configuration exceed the capacity of the mSATA connection?

    For example, I'm considering buying the Aorus X7 Pro which offers 3x mSATA SSD in Raid0 at 1500 MB/s sequential read speed. Would we actually be able to make use of these speeds, or is it too fast for mSATA? Does this laptop use an m.2 connection?

    http://www.aorus.com/public/images/features/x7pro/a3-1.jpg
     
    moviemarketing, Oct 13, 2014
    #1
  2. Dellienware

    Dellienware Workstations & Ultrabooks

    Reputations:
    215
    Messages:
    1,588
    Likes Received:
    61
    Trophy Points:
    66
    You will most likely see like 1250MB speed. Because of scaling. Individual mSATA fully supports individual drive's speed. It's the controller that needs the magic.

    Imagine having one water duct that supports flow of 500 oz/second. Now you want more water flow so you install 2 more and have them work parallel. The water duct themselves are no bottleneck. With RAID 0, data is stripped, so SATA itself isn't bottleneck.

    3 drivers for RAID 0 is about max efficient for scaling. 4 drives on RAID 0 starts to really not scale well at all.
     
    Dellienware, Oct 13, 2014
    #2
    moviemarketing and SPVietBoy like this.
  3. moviemarketing

    moviemarketing Milk Drinker

    Reputations:
    1,036
    Messages:
    4,247
    Likes Received:
    881
    Trophy Points:
    181
    Thanks, Dell, that's very helpful advice!
     
    moviemarketing, Oct 13, 2014
    #3
  4. Marksman30k

    Marksman30k Notebook Deity

    Reputations:
    2,080
    Messages:
    1,068
    Likes Received:
    180
    Trophy Points:
    81
    Ultimately, your bottleneck is the DMI link between the Chipset and the CPU. This is around 20 Gigabit/sec, which means you'd need about 5 SSDs in RAID 0 to saturate it.
     
    Marksman30k, Oct 14, 2014
    #4
    moviemarketing, residualvoltage, SPVietBoy and 1 other person like this.