7.x FW on 2500 and 6000 series doesnot operate the same way as 6.x FW does. So on some/most loads ignore cache synch commands option may not improve performance as expected.
Best regards Mertol Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +902123352222 Email mertol.ozyo...@sun.com -----Original Message----- From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-boun...@opensolaris.org] On Behalf Of Bob Friesenhahn Sent: Tuesday, October 13, 2009 6:05 PM To: Nils Goroll Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] STK 2540 and Ignore Cache Sync (ICS) On Tue, 13 Oct 2009, Nils Goroll wrote: > I am trying to find out some definite answers on what needs to be done on an > STK 2540 to set the Ingnore Cache Sync Option. The best I could find is Bob's > "Sun StorageTek 2540 / ZFS Performance Summary" (Dated Feb 28, 2008, thank > you, Bob), in which he quotes a posting of Joel Miller: I should update this paper since the performance is now radically different and the StorageTek 2540 CAM configurables have changed. > Is this information still current for F/W 07.35.44.10 ? I suspect that the settings don't work the same as before, but don't know how to prove it. > Bonus question: Is there a way to determine the setting which is currently > active, if I don't know if the controller has been booted since the nvsram > potentially got modified? >From what I can tell, the controller does not forget these settings due to a reboot or firmware update. However, new firmware may not provide the same interpretation of the values. Bob -- Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
