[CentOS] Vsftpd & Iscsi - fast enough

Wed May 23 03:09:42 UTC 2007
Karl R. Balsmeier <karl at klxsystems.net>

Ross S. W. Walker wrote:
>> -----Original Message-----
>> From: centos-bounces at centos.org 
>> [mailto:centos-bounces at centos.org] On Behalf Of Karl R. Balsmeier
>> Sent: Tuesday, May 22, 2007 2:28 PM
>> To: centos at centos.org
>> Subject: [CentOS] Vsftpd & Iscsi - fast enough
>>
>> To extend space on our 64-bit centos FTP servers, we are considering 
>> setting them up to work with an existing PromiseRAID system via iscsi.
>>
>> -just curious if anyone here knows if iScsi is fast enough to 
>> serve up 
>> all the images?
>>
>> -might it be something where we get dedicated cards and put the iScsi 
>> traffic on its own Vlan?
>>
>> Just curious if this would hold up under alot of traffic, 
>> like weather 
>> images and the like...
>>     
>
> The ability of iSCSI to support high throughput depends on:
>
> 1) How the back-end storage being served up by iSCSI is configured
> 2) How the network interconnects between the iSCSI targets and
> initiators are configured
> 3) How well the FTP software does at reading the data from disk and
> pumping it out the network
>
> 1Gbps ethernet can handle up to 115MB/s per interface. Using MPIO
> round-robin over several interfaces you can continue to add throughput
> if the application can scale well across these multiple paths.
>
> -Ross
>
>   
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?  On the storage side, not sure if MPIO 
will auto-detect the device, but maybe it'll see it.  -wonder if Vsftpd 
would play well with all of this.

-krb
> ______________________________________________________________________
> 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.
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>