On Thu, Jul 03, 2008 at 01:43:36PM +0300, Mertol Ozyoney wrote: > 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 > -) Bateries are the first thing to fail > -) Servers already have too much ram
Well, if the server attached to the J series is doing ZFS/NFS, performance will increase with zfs:zfs_nocacheflush=1. But, without battery-backed NVRAM, this really isn't "safe". So, for this usage case, unless the server has battery-backed NVRAM, I don't see how the J series is good for ZFS/NFS usage. -- albert chin ([EMAIL PROTECTED]) _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
