[..trimming people who are on the list..] er krishna wrote: > Thanks, to all of you for this information. So now, what I can conclude > that we can connect 24 SATA hard disk having 2 TB capacity. Please > confirm weather we can reach beyond this limit.
you can always use multiple controller boards, and many of the controller boards support sata/sas expanders. These break out a single SAS/SATA connector into multiple host connectors, as SAS and SATA are buses, not ports. in the case of SAS, you can basically have 128 fanout expanders and 128 edge expanders per host connector. That gets you 16384 disks per physical SAS connector. In the case of SATA, you can get a 15-device breakout expander. This expander cannot be cascaded like SAS, so you're limited to 15 devices per connector (total). Note, however, that if you're using a "dumb" controller, it leaves it up to the OS to talk to the expander; in the case of Linux the expander support is rather weak. If you're using an intelligent controller like one of the Areca or 3ware RAID boards, the expander code is built-in to the firmware on the controller and abstracted away from the OS (as it should be -- if you're dealing with that many disks you want something with a more intelligent interrupt handler than x86, certainly). regards, -- Kelsey Hudson Sr. Systems Administrator, DrJays.com 9180 Camino Santa Fe, San Diego, CA 92121 888.437.5297x134 (desk) 619.852.6374 (cell) ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensign option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
