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Date:      Mon, 20 Jul 2009 16:29:13 -0400
From:      "Grant Peel" <gpeel@thenetnow.com>
To:        "mojo fms" <fbsdlilly@gmail.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: NFS- SAN - FreeBSD
Message-ID:  <85A4A9F5895D4CDCAEDF23E8181A118D@GRANT>
References:  <25A3192F31A344B99F50583BDC58C921@GRANT> <C4577BCC84D24FFE97FD4036C2C4FB82@GRANT> <f151ba00907201321x363de61ai27c54d4902d1d9fc@mail.gmail.com>

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Thanks for the reply.

I have not used/investigated the iSCSI thing yet....

The original question is can I just use an NFS mount to the storage's =
/home partition?

-Grant
  ----- Original Message -----=20
  From: mojo fms=20
  To: Grant Peel=20
  Cc: freebsd-questions@freebsd.org=20
  Sent: Monday, July 20, 2009 4:21 PM
  Subject: Re: NFS- SAN - FreeBSD


  You would be better off at least having the SAN on 1gb ethernet or =
even better tripple 1gb (on a 100mb switch should be fine but you need =
failover for higher avaliability) ethernet for latency and failover =
reasons with a hot backup on the network controller.  I dont see why you =
could not do this, its just iscsi connection normally so there is not a =
big issue getting freebsd to connect to it.  We run 2 of the 16tb =
powervault which does pretty well for storage, one runs everything and =
the other is a replicated offsite backup.  Performance wise, it really =
depends on how many servers you have pulling data from the SAN and how =
hard the IO works on the current servers.  If you have 100 servers you =
might push the IO a bit but but it should be fine if your not serving =
more than 2Mb/s out to everyone, the servers and disks are going to =
cache a fair amount of always used data.


  On Mon, Jul 20, 2009 at 11:52 AM, Grant Peel <gpeel@thenetnow.com> =
wrote:

    Hi all,

    I am assuming by the lack of response, my question to too long =
winded, let me re-phrase:

    What kind of performance might I expect if I load FreeBSD 7.2 on a =
24 disk, Dell PowerVault when its only mission is to serve as a local =
area storage unit (/home). Obviously, to store all users /home data. =
Throug an NFS connection via fast (100m/b) ethernet. Each connecting =
server (6) contain about 200 domains?

    -Grant

    ----- Original Message ----- From: "Grant Peel" =
<gpeel@thenetnow.com>
    To: <freebsd-questions@freebsd.org>
    Sent: Saturday, July 18, 2009 10:35 AM
    Subject: NFS- SAN - FreeBSD=20




      Hi all,

      Up to this point, all of our servers are standalone, i.e. all =
services and software required are installed on each local server.

      Apache, Exim, vm-pop3d, Mysql, etc etc.

      Each local server is connected to the Inet via a VLAN (WAN), to =
our colo's switch.

      Each server contains about 300 domains, each domain has its own =
IP.

      Each sever is also connected to a VLAN (LAN) via the same (Dell 48 =
Port managed switch).

      We have been considering consolidating all users data from each =
server to a central (local), storage unit.

      While I do have active nfs's running (for backups etc), on the LAN =
only, I have never attempted to create 1 mass storage unit.

      So I suppose the questions are:

      1) Is there any specific hardware that anyone might reccommend? I =
want to stick with FreeBSD as the OS as I am quite comfortable admining =
it,

      2) Would anyone reccomend NOT using FreeBSD? Why?

      3) Assuming I am using FreeBSD as the storage systems OS, could =
NFS simply be used?

      4) Considering out whole Inet traffic runs about 2 Mb/s, is there =
any reason the port to the Storage unit should be more than 100 M/b =
(would it be imparative to use 1 G/b transfer)?

      TIA,

      -Grant

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  --=20
  Who knew



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