http://www.osnews.com/story/20742/From_Parallel_SCSI_to_Serial_SCSI Exploring the Future of Computing en-us Copyright 2001-2009, David Adams adam+nospam@osnews.com Mon, 09 Nov 2009 13:00:59 GMT http://www.osnews.com/images/osnews.gif http://www.osnews.com http://osnews.com/thread?342747 http://osnews.com/thread?342747 There is a mistake in the article. SAS top speed is not 3 GB/s, but 3 Gb/s (bits not bytes).
IBM messed something up again Thu, 08 Jan 2009 20:53:00 GMT donotreply@osnews.com (dvzt) Comments http://osnews.com/thread?342761 http://osnews.com/thread?342761 No, I am sorry. That would be WAY to fast for the (actual) drives throughput on the hardware itself, not even mentioning the interfaces.

3 Gigabit/sec == 300+MB/sec (depending on your source and setup supposedly 322MB/sec w/o EC)

3GigaBytes/sec == at least 24Gigabits/sec without any form of correction

Parallel SCSI has been stuck at "U320" for a while, and it has never been able to really truly been able to sustain (even close to) 320MB/sec.

Hey, lets look at the controllers... oh look at that, models from Adaptec, Mega (et al) all focused on the same chipsets... supporting either SAS or SATAII at 3G-BIT PER SECOND

Lets think on that before we jump.


My Edit... leaving for proof I'm an idiot:
And YES, I now read comment properly. (BAD GREG! Naughty GREG!)Edited 2009-01-08 22:22 UTC Thu, 08 Jan 2009 22:19:00 GMT donotreply@osnews.com (gfolkert) Comments http://osnews.com/thread?342954 http://osnews.com/thread?342954 yeah it's bad maners to use gbit vs mbyte in the comparison. on quick read people will go ooh sas is so much faster.

of course sas will have that speed to every disk so it's good for raid systems and such.

then again when people need lots of disk's they use external cabinets for those and they still only use one cable to connect all of the disk's so then we are back to the same problems of many disk's sharing one bus that goes around 300MB/s Sat, 10 Jan 2009 03:26:00 GMT donotreply@osnews.com (dizzey) Comments http://osnews.com/thread?342968 http://osnews.com/thread?342968 People used to connect external cabinets with a single SCSI cable, but not lately.

It might be a single cable, but these days it is likely to be Infiniband or a PCI-Express variant. Sat, 10 Jan 2009 09:08:00 GMT donotreply@osnews.com (zlynx) Comments http://osnews.com/thread?343166 http://osnews.com/thread?343166 People needing lots of external storage connect via fibre channel with multiple paths for redundancy and performance. Currently fibre channel products are available in speeds up to 8Gbs per connection.

Also fibre channel over ethernet (FCoE) or iSCSI via 10Gbs ethernet are alternatives for high speed external storage. Again multiple paths can be used for redundancy and performance. Mon, 12 Jan 2009 18:12:00 GMT donotreply@osnews.com (tsedlmeyer) Comments