SATA II Harddisks ?

Discussion in 'Asus' started by Skybuck Flying, Jul 3, 2005.

  1. Hi,

    Can SATA II harddisks be used with SATA I motherboards ?

    In otherwords are SATA II harddisk backwards compatible with just SATA ?

    Does this motherboard: Asus A8N-SLI Deluxe support SATA II harddisks ?

    Would I need an extra controller to connect the harddisks or do I simply
    connect them
    directly to the motherboard ?

    It seems this motherboard can support 8 harddisks ???

    What kind of casing is needed for that ??

    Bye,
    Skybuck.
     
    Skybuck Flying, Jul 3, 2005
    #1
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  2. Hard to tell, 'cause SATA-II does not even exist yet. Yes, second-gen
    SATA drives support 3 Gb/s transfers and possibly other additional
    features (and the cabling/connectors should be improved), but there is
    no such thing as "SATA-II". In other words, even an "old" SATA
    controller will swallow current drives.

    Stephan
     
    Stephan Grossklass, Jul 3, 2005
    #2
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  3. Skybuck Flying

    Mark A Guest

    There are several SATA II disks shipping from Maxtor and Western Digital and
    a few others (check their websites). Don't expect to see a noticeable
    improvement in 7200 RPM SATA II drives when using applications, because the
    disks are limited by the rotational delay. You might see a slight
    improvement in benchmarks for large file transfers over SATA I.
     
    Mark A, Jul 3, 2005
    #3
  4. Skybuck Flying

    Christo Guest

    SATA-II hard drives CAN be plugged into older SATA slots, they obviously
    wont go at the 3 Gbps of SATA II

    there are IDE controllers on all boards for the CD-ROM drives

    there are 4 SATA connectors on your board, this means you can have 4 SATA
    hard drives (or SATA II)

    you could stick 4 hard drives on the two IDE channels

    you might want to keep one channel for cd-rom and dvd though

    so you could have 8 hard drives if you used all of the possible connectors,
    but 6 if you used one IDE channel for optical drives.

    if you want to use RAID it doesn't change anything, still 4 SATA hard drives
    or SATA II hard drives and setup a RAID amongst them

    hope this helps

    Christo
     
    Christo, Jul 3, 2005
    #4
  5. This is one of the big problems. SATA-II, does exist as a 'concept
    document', but a whole load of manufacturers, have jumped on the
    'bandwagon', and are selling drives without most of the potential
    features, just with the faster interface, as 'SATA-II'. The SATA
    organisation, makes the point in big letters all over it's site, that
    these are not technically SATA-II, but I suspect that the same thing will
    happen as happened on many of the SCSI updates over the years, and the
    general 'useage' will become accepted after a while....
    Most of the 300MB/sec transfer drives, are either capable of intelligently
    'switching back', or come with software to change the operating modes
    (some manufacturers ship their drives set to default to the slower
    transfer rate, with software to turn them up if required).
    These drives basically gain nothing over their older brethren, The
    interface is so much faster than the media 'rate', that it is a bit like
    putting a set of tyres rated for 200mph, onto a car that can only do
    100mph. It is only on the rare occasion, when running down a steep hill,
    with a 'following wind', that the old tyres would have a problem, and even
    on these occasions, the 'gain' would only be a few percent.
    Since it is only a chip change, it is cheap for the drive manufacturers to
    do, and it is cheaper/easier for them to use the same interface chips on
    all their drives, and at the same time this gives them a 'marketting
    gimmick' to use.
    Yes, current drives using this interface, can all be used with existing
    controllers.

    Best Wishes
     
    Roger Hamlett, Jul 3, 2005
    #5
  6. Hmm I have a good question :)

    Is it possible to use the 4 raid connectors and the 4 sata connectors at the
    same time ? :)

    If (probably) not, then the question is why not ?

    If it was possible that would mean 4 drives for raid plus 4 sata drives plus
    4 ide drivers... 12 drives seems a bit too much hehehehe.

    (not to mention possible expansion cards and maybe even sata cables which
    could connect two drives like ide ??? )

    Bye,
    Skybuck.
     
    Skybuck Flying, Jul 3, 2005
    #6
  7. Skybuck Flying

    Ron Reaugh Guest


    Obviously SATA II HDs wont go to 3 Gbps either except in very brief
    non-sustained bursts.
     
    Ron Reaugh, Jul 3, 2005
    #7
  8. "They obviously won't go at the 3 Gbps of SATA II" either, if they are just plain 1.5Gb/s SATA-2 drives.
     
    Folkert Rienstra, Jul 3, 2005
    #8
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