-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Stephen John Smoogen Sent: Tuesday, May 22, 2007 3:02 PM To: CentOS mailing list Subject: Re: [CentOS] Vsftpd & Iscsi - fast enough
On 5/22/07, Mark Hull-Richter mhullrich@gmail.com wrote:
On 5/22/07, Ross S. W. Walker rwalker@medallion.com wrote:
The ability of iSCSI to support high throughput depends on:
- How the back-end storage being served up by iSCSI is configured
- 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.
I'm a little fuzzy on this Mb vs MB issue - which one is
megaBITS and
which is megaBYTES, and is this a standard convention or ???
Thanks.
20 years ago, Megabit was 2^20 bits (Mb) and Megabyte was 2^20 bytes (MB). The SI (ISO?) redid the units later to deal with the fact that Mega has a scientific definition of 10^6. This also allows the Hard-drive conspiracy to undersell you the number of bits on a disk. Nowadays, Mb is supposed to mean 10^6 bits, and a Mibit means 2^20 bits.
Thus you end up with a gigabit card which is 10^6 bits but the OS measures in 2^20 bits.
References http://en.wikipedia.org/wiki/Megabit http://en.wikipedia.org/wiki/Megabyte
I always thought 10^6 was Mib/MiB and 2^10 was Mb/MB to keep the older manuals and papers consistent, but that doesn't seem to match the wikipedia... Is the wikipedia correct?
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