Mertol Ozyoney wrote: > Hi; > > You are right that J series do not have nvram onboard. However most Jbods > like HPS's MSA series have some nvram. > The idea behind not using nvram on the Jbod's is > > -) There is no use to add limited ram to a JBOD as disks already have a lot > of cache. > -) It's easy to design a redundant Jbod without nvram. If you have nvram and > need redundancy you need to design more complex HW and more complex firmware
which translates tohigher costs for hardware and higher costs for the software (firmware and upwards) required to manage it. > -) Bateries are the first thing to fail That's why high-end arrays like those from HDS tend to have enough battery storage to keep disks spinning for nearly 72 hours. Redundancy costs! > -) Servers already have too much ram Not when the users are looking at flash-heavy websites ;-) James C. McPherson -- Senior Kernel Software Engineer, Solaris Sun Microsystems http://blogs.sun.com/jmcp http://www.jmcp.homeunix.com/blog _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
