<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">I've not used any esata, I *presume* it's looks like a normal sata device, and should use normal sata drivers. I doubt esata uses a different protocol or device driver than normal sata,.<br>Why would it, the the cable run's 'outside' of your machine. ..<br>(and probably has about 17 different connectors(!) I think..... i may be wrong!! I'm sure<br>any multiplexing that's going on, is done in hardware (i.e 1 cable, 4 disks)<br><br>If things are doom and gloomy on the esata , don't rule out using aoe over gigabit ethernet, give you flexible storage over the network, and combine that with some clever drdb -ing you can add as much fault tollerance as you want.<br><br>http://mike.neir.org/weblog/619 is interesting.<br><br>You don't exactly say what your going to use the storage for, gigabit ethernet cards and switches are cheap, and you can bond (if your
using linux) gigabit together, some people I've heard have got over 300mb/s of read/write performance using this method, and striping aoe over different disk and systems. using drdb would add a layer of fault tollerance to the gig.<br>If you go this route use PCIE gigabit adapters, not those made in pci format, they are cheaper, but you'll only ever get around half the speed that gigabit ethernet can go, as they just eat all the pci bus bandwidth....<br><br><table id="sortable_table_id_0" class="wikitable sortable"><tbody><tr><td><br></td>
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<td><br></td></tr></tbody></table><br><br>iscsi is interesting, but I just get more success with aoe at the moment in terms of raw performance......<br><br>when you get it out of your head that storage is no longer attached to system, but just<br>out there on the network somewhere, you can start doing some very clever things.<br><br>you don't need to bring a server down to add sata storage, just configure it somewhere <br>else and import it. Hotswap sata driver bays are nice, but expensive.<br><br>Replicate your storage array somewhere else, may to anothe building, now your data<br>is safe from falling asteriods.<br><br> Using loopback devices, 'partitions' can be simple linux files (all beit large), thus you can<br>do clever thing with cow's .. mooooo.<br><br><br>here some links....check
em..<br><br>http://www.drbd.org/<br><br>http://www.linuxjournal.com/article/8149<br><br>http://en.wikipedia.org/wiki/ATA_over_Ethernet<br><br>http://www.mjmwired.net/kernel/Documentation/networking/bonding.txt<br>
<br><br>A guide I wrote on using aoe vblade's with cow's. <br><br>http://www.etherboot.org/wiki/appnotes/cow<br><br>on the other hand, if you want to get a lot of storage, and want support etc don't forget these people....<br><br>http://www.coraid.com/<br><br>http://www.coraid.com/PRODUCTS/SR2421<br><br>24 Terrabytes anyone, almost enough space to store azmodie 'film' collection ;-).<br><br>Cheers,<br>Lee<br><br>--- On <b>Mon, 9/3/09, Simon Wells <i><swells@computing.dundee.ac.uk></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;">From: Simon Wells <swells@computing.dundee.ac.uk><br>Subject: [dundee] ESATA Linux Support<br>To: "Tayside Linux User Group" <dundee@lists.lug.org.uk><br>Cc: "Simon Wells" <swells@computing.dundee.ac.uk><br>Date: Monday, 9 March, 2009, 6:56 PM<br><br><pre>Does anybody have any experience of using eSATA with Linux?<br><br>I have been looking
at something like the following:<br>http://www.amazon.co.uk/EdgeStore-DAS801T-Bay-eSATA-Enclosure/dp/B001H54JWW/ref=cm_cr_pr_sims_t<br><br>My plan would be to organise it as two separate JBOD arrays, using LVM, and<br>connected via eSATA. The two arrays will give me some measure of redundancy and<br>will make backing up my data much simpler. There is also a second remote server<br>that holds backups and very important data is also archived to DVD.<br><br>At the moment I am using a whole pile of separate external USB drives and want<br>to simplify the system by getting all of the drives into a single unit. Am I<br>missing anything? I have not used eSATA with Linux myself and would like to know<br>if there are any gotchas or things that I should be aware of.<br><br>Thanks,<br>Simon<br><br>Dr. Simon Wells<br>=============<br><br>E-mail: swells@computing.dundee.ac.uk<br>IM: sw3lls@yahoo.co.uk<br>Mail: School of Computing,<br> Queen Mother Building,<br>
University of Dundee,<br> Dundee, DD1 4HN.<br>WWW: http://quiddity.computing.dundee.ac.uk/swells/blog/<br>Phone: +44 (0)1382 386 526<br>Fax: +44 (0)1382 385 509 (FAO: Simon Wells)<br><br><br><br><br></pre><pre>_______________________________________________<br>dundee GNU/Linux Users Group mailing list<br>dundee@lists.lug.org.uk http://dundee.lug.org.uk<br>https://mailman.lug.org.uk/mailman/listinfo/dundee<br>Chat on IRC, #tlug on dundee.lug.org.uk</pre></blockquote></td></tr></table><br>