Sata PCI that supports Hot Swap Enclosures question

Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

Does the PCI Card itself needs to be hot swap capable or the Enclosures
alone ? Please advise. Saw a few from Granite but not sure if it works
well. Does it supports Mutitasking like SCSI ?
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More about sata supports swap enclosures question
  1. Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

    Louis wrote:

    > Does the PCI Card itself needs to be hot swap capable or the Enclosures
    > alone ?


    The card has to support it but most do--hot-swap is part of the SATA
    spec--the trouble is that some of the chip manufacturers didn't fully
    implement the spec.

    > Please advise. Saw a few from Granite but not sure if it works
    > well. Does it supports Mutitasking like SCSI ?

    SATA allows one drive and one host adapter per bus. In that situation
    nothing special has to be done to support multitasking--any such support
    would be upstream of the SATA hardware.

    --
    --John
    Reply to jclarke at ae tee tee global dot net
    (was jclarke at eye bee em dot net)
  2. Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

    "J. Clarke" <jclarke@nospam.invalid> wrote in message news:ct8eqe350g@news2.newsguy.com
    > Louis wrote:
    >
    > > Does the PCI Card itself needs to be hot swap capable or the Enclosures
    > > alone ?
    >
    >
    > The card has to support it but most do--hot-swap is part of the SATA
    > spec--the trouble is that some of the chip manufacturers didn't fully
    > implement the spec.
    >
    > > Please advise. Saw a few from Granite but not sure if it works
    > > well. Does it supports Mutitasking like SCSI ?
    >
    > SATA allows one drive and one host adapter per bus.

    Nonsense.
    It's point to point but several drives can be connected through a concentrator.

    > In that situation nothing special has to be done to support multi-
    > tasking--any such support would be upstream of the SATA hardware.

    If the device (not drive) is a concentrator then the question of IO
    serialization or parallelization (device/drive multitasking) comes up.
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