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Hello, does anyone have a server from which has 2x2TB, 2x3TB or 2x600GB SAS disk setup? I'm looking to find out the I/O performance of these disks have so if someone could produce a I/O or dd test for me I would appreaciate it. :)


  • Hello, we did had sas server from them , i did made experiences in RAID 0 and 1 and belive me the results was not what i expected, in rest they are ok, but sugestion is to take more hdd like 4 try raid10 and see the difference, me i was thinking if i have raid zero on SAS i get faster response for my tests, but the difference was not that big and we droped the server.

  • Do you know if the server come in RAID1 by default?

  • /dev/sda:

    Timing cached reads: 8932 MB in 2.00 seconds = 4467.84 MB/sec
    Timing buffered disk reads: 342 MB in 3.00 seconds = 113.99 MB/sec

    the speedtest was

    lets try the wget

    <p> wget -O - -o /dev/null|bash
    CPU model :  Intel(R) Core(TM) i3 CPU         540  @ 3.07GHz
    Number of cores : 4
    CPU frequency :  3059.254 MHz
    Total amount of ram : 7974 MB
    Total amount of swap : 975 MB
    System uptime :   13 days, 1:12,
    Download speed from CacheFly: 77.8MB/s
    Download speed from Coloat, Atlanta GA: 12.1MB/s
    Download speed from Softlayer, Dallas, TX: 13.3MB/s
    Download speed from Linode, Tokyo, JP: 7.13MB/s
    Download speed from, Rotterdam, NL: 44.0MB/s
    Download speed from Leaseweb, Haarlem, NL: 51.3MB/s
    Download speed from Softlayer, Singapore: 6.57MB/s
    Download speed from Softlayer, Seattle, WA: 13.5MB/s
    Download speed from Softlayer, San Jose, CA: 10.9MB/s
    Download speed from Softlayer, Washington, DC: 20.3MB/s
    I/O speed :  148 MB/s

    Thanked by 2Mark_R emilv
  • @emilv said:
    Do you know if the server come in RAID1 by default?

    i got raid1 from them, however it seems was just soft RAID

    Thanked by 1Mark_R
  • @iSky was that 2TB disks or?

  • @emilv i got that one from their reseller never offer the i3 plan. And yes it was 2TB disks. and here the speed disk dd

    `dd if=/dev/zero of=/tmp/output.img bs=8k count=256k

    262144+0 records in
    262144+0 records out
    2147483648 bytes (2.1 GB) copied, 9.08541 s, 236 MB/s

    i don't use the raid :D

    Thanked by 1emilv
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