FW: 20TB Storage System

From: Max Clark (max.clark_at_media.net)
Date: 09/02/03

  • Next message: Eric Anderson: "Re: FW: 20TB Storage System" 
    To: <freebsd-questions@freebsd.org>, <freebsd-performance@freebsd.org>, <freebsd-hackers@freebsd.org>
Date: Tue, 2 Sep 2003 12:48:29 -0700

    Sorry for the cross post.

    -----Original Message-----
    From: owner-freebsd-isp@freebsd.org
    [mailto:owner-freebsd-isp@freebsd.org]On Behalf Of Max Clark
    Sent: Tuesday, September 02, 2003 11:00 AM
    To: freebsd-isp@freebsd.org
    Subject: 20TB Storage System

    Hi all,

    I need to attach 20TB of storage to a network (as low cost as possible), I
    need to sustain 250Mbit/s or 30MByte/s of sustained IO from the storage to
    the disk.

    I have found external Fibre Channel -> ATA 133 Raid enclosures. These
    enclosures will house 16 drives so with 250GB drives a total of 3.5TB each
    after a RAID 5 format. These enclosures have advertised sustained IO of
    90-100MByte/s each.

    One solution we are thinking about is to use a Intel XEON server with 3x FC
    HBA controller cards in the server each attached to a separate storage
    enclosure. In any event we would be required to use ccd or vinum to stripe
    multiple storage enclosures together to form one logical volume.

    I can partition this system into two separate 10TB storage pools.

    Given the above:
    1) What would my expected IO be using vinum to stripe the storage enclosures
    detailed above?
    2) What is the maximum size of a filesystem that I can present to the host
    OS using vinum/ccd? Am I limited anywhere that I am not aware of?
    3) Could I put all 20TB on one system, or will I need two to sustain the IO
    required?
    4) If you were building this system how would you do it? (The installed $/GB
    must be below $5.00 dollars).

    My other options are to use Solaris or Windows (which I would rather not
    do).

    Thanks in advance,
    Max

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  • Next message: Eric Anderson: "Re: FW: 20TB Storage System"

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