Hi Karl, Thank you for all your input, and i will keep this list updated about this "project".
Regards, Bruno Karl Katzke wrote: > Bruno - > > Sorry, I don't have experience with OpenSolaris, but I *do* have experience > running a J4400 with Solaris 10u8. > > First off, you need a LSI HBA for the Multipath support. It won't work with > any others as far as I know. > > I ran into problems with the multipath support because it wouldn't allow me > to manage the disks with cfgadm and got very confused when I'd do something > as silly as replace a disk, causing the disk's GUID (and therefor address > under the virtual multipath controller) to change. My take-away was that > Solaris 10u8 multipath support is not ready for production environments as > there are limited-to-no administration tools. This may have been fixed in > recent builds of Nevada. (See a thread that started around 03Nov09 for my > experiences with MPxIO.) > > At the moment, I have the J4400 split between the two controllers and simply > have even numbered disks on one, and odd numbered disks on the other. Both > controllers can *see* all the disks. > > You are correct about the CAM software. It also updates the firmware, though, > since us commoners don't seemingly have access to the serial management ports > on the J4400. > > I can't speak to locating the drives -- that would be something you'd have to > test. I have found increases in performance on my faster and more random > array; others have found exactly the opposite. > > My configuration is as follows; > x4250 > - rpool - 2x 146 gb 10k SAS > - 'hot' pool - 10x 300gb 10k SAS + 2x 32gb ZIL > j4400 > - 'cold' pool - 12x 1tb 7200rpm SATA ... testing adding 2x 146gb SAS in the > x4250, but haven't benchmarked yet. > > Performance on the J4400 was disappointing with just one controller to 12 > disks in one RAIDZ2 and no ZIL. However, I do not know if the bottleneck was > at the disk, controller, backplane, or software level... I'm too close to my > deadline to do much besides randomly shotgunning different configs to see > what works best! > > -K > > > Karl Katzke > Systems Analyst II > TAMU - RGS > > > > >>>> On 11/25/2009 at 11:13 AM, in message <4b0d65d6.4020...@epinfante.com>, >>>> Bruno >>>> > Sousa <bso...@epinfante.com> wrote: > >> Hello ! >> >> I'm currently using a X2200 with a LSI HBA connected to a Supermicro >> JBOD chassis, however i want to have more redundancy in the JBOD. >> So i have looked into to market, and into to the wallet, and i think >> that the Sun J4400 suits nicely to my goals. However i have some >> concerns and if anyone can give some suggestions i would trully appreciate. >> And now for my questions : >> >> * Will i be able to achieve multipath support, if i connect the >> J4400 to 2 LSI HBA in one server, with SATA disks, or this is only >> possible with SAS disks? This server will have OpenSolaris (any >> release i think) . >> * The CAM ( StorageTek Common Array Manager ), its only for hardware >> management of the JBOD, leaving >> disk/volumes/zpools/luns/whatever_name management up to the server >> operating system , correct ? >> * Can i put some readzillas/writezillas in the j4400 along with sata >> disks, and if so will i have any benefit , or should i place >> those *zillas directly into the servers disk tray? >> * Does any one has experiences with those jbods? If so, are they in >> general solid/reliable ? >> * The server will probably be a Sun x44xx series, with 32Gb ram, but >> for the best possible performance, should i invest in more and >> more spindles, or a couple less spindles and buy some readzillas? >> This system will be mainly used to export some volumes over ISCSI >> to a windows 2003 fileserver, and to hold some NFS shares. >> >> >> Thank you for all your time, >> Bruno >> >> > > >
smime.p7s
Description: S/MIME Cryptographic Signature
_______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
