> -----Original Message----- > From: centos-bounces at centos.org > [mailto:centos-bounces at 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 at gmail.com> wrote: > > On 5/22/07, Ross S. W. Walker <rwalker at medallion.com> wrote: > > > > > > 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. > > > > > > > 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? ______________________________________________________________________ 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.