[CentOS] Vsftpd & Iscsi - fast enough
Ross S. W. Walker
rwalker at medallion.com
Wed May 23 16:32:14 UTC 2007
> -----Original Message-----
> From: centos-bounces at centos.org
> [mailto:centos-bounces at centos.org] On Behalf Of Les Mikesell
> Sent: Wednesday, May 23, 2007 9:10 AM
> To: CentOS mailing list
> Subject: Re: [CentOS] Vsftpd & Iscsi - fast enough
>
> Matt Shields wrote:
> > On 5/23/07, Les Mikesell <lesmikesell at gmail.com> wrote:
> >> > hey this part is fascinating, -so how would one
> practically deploy
> >> this,
> >> > -say 4 GB NICs and some supported hardware? for traffic
> 100 - 200 megs
> >> > daily perhaps this is too much?
> >>
> >> There's no such thing as 'too fast', but do you really
> need to complete
> >> you daily transfer in less than a second? On the
> practical side the
> >> underlying disks aren't going to be that fast anyway.
> >>
> >
> > You might if you have thousands of requests per second!!!
>
>
> A 200 Meg file is likely to be completely cached in the ftp
> server's RAM
> - and the cheapest way to get performance is to be sure that happens.
Yes, cache is king here, whether it be FTP, CIFS, or SQL DBs.
Think 64-bit, and as much RAM as you can afford/fit into it.
> > As a side note, when using the Promise VTrak and iSCSI it supports
> > multipath.
>
> It would probably be simpler to provide a separate interface
> or two for
> the ftp server <-> storage network than to go too crazy with
> multipathing. And for an ftp server you shouldn't need a great deal
> more speed on the filesystem side than you have on client
> connection side.
How about two 4-port e1000 cards, PCI-X 133 if you have 2 PCI-X 133
slots... If that is over-kill, then 2 2-port cards.
You can then mix-up bonding and multi-pathing for SAN and Internet
traffic and have 2 separate cards for redundancy, though I have yet
to see a network card fail, in my experience memory, storage
HBAs/disks, graphics cards and the occassional motherboard seem to
be the biggest culprits.
I would definitely keep the SAN traffic, Internet traffic and
system management traffic separate.
-Ross
______________________________________________________________________
This e-mail, and any attachments thereto, is intended only for use by
the addressee(s) named herein and may contain legally privileged
and/or confidential information. If you are not the intended recipient
of this e-mail, you are hereby notified that any dissemination,
distribution or copying of this e-mail, and any attachments thereto,
is strictly prohibited. If you have received this e-mail in error,
please immediately notify the sender and permanently delete the
original and any copy or printout thereof.
More information about the CentOS
mailing list