Re: 20TB Storage System

From: Dan Nelson (dnelson_at_allantgroup.com)
Date: 09/03/03

  • Next message: Dan Nelson: "Re: 20TB Storage System" 
    Date: Tue, 2 Sep 2003 17:41:37 -0500
To: Max Clark <max.clark@media.net>

    In the last episode (Sep 02), Max Clark said:
    > 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?

    Depends on whether you plan on crashing or not :) According to
    http://lists.freebsd.org/pipermail/freebsd-fs/2003-July/000181.html,
    you may not want to create filesystems over 3TB if you want fsck to
    succeed. I don't know if that's using the default newfs settings
    (which would create an insane number of inodes), though.

    > 3) Could I put all 20TB on one system, or will I need two to sustain
    > the IO required?

    To sustain only 30MByte/s across the entire set? Doesn't really
    matter, since even a single disk could do that. 

    -- 
	Dan Nelson
	dnelson@allantgroup.com
_______________________________________________
freebsd-performance@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"
  • Next message: Dan Nelson: "Re: 20TB Storage System"

    Relevant Pages

    • Re: NFS and different exports to the same host
      ... > I have to export everything the same for a particular filesystem. ... Each filesystem can only be exported with one set of attributes to a particular host. ... /usr/ports client ... drive hwraid1 device /dev/da0s1h ...
      (freebsd-questions)
    • Re: 20TB Storage System
      ... In the last episode, Max Clark said: ... > 2) What is the maximum size of a filesystem that I can present to the ... > host OS using vinum/ccd? ...
      (freebsd-questions)
    • Re: 20TB Storage System
      ... In the last episode, Max Clark said: ... > 2) What is the maximum size of a filesystem that I can present to the ... > host OS using vinum/ccd? ...
      (freebsd-hackers)
    • Re: is it possible to mount a vinum-fs on 2 hosts?
      ... I would love to see a cluster capable filesystem for freebsd. ... mount the file system read/write on Host A and then mount the file ...
      (freebsd-stable)
    • Re: Options for synchronising filesystems
      ... > Ultimately I'd like to synchronise the host OS on each server too. ... Keep a master image on an admin box, and rsync it out to the frontends ... > I think this is only feasible if I can build a highly-available NFS server, ... > remount the filesystem on NFS server 2 after each change. ...
      (freebsd-isp)