When set up with multi-pathing to dual redundant controllers, is layering zfs on top of the 6140 of any benefit? AFAIK this array does have internal redundant paths up to the disk connection. justin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20080702/a7e11f85/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 3361 bytes Desc: not available URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20080702/a7e11f85/attachment.bin>
On Wed, 2008-07-02 at 02:22 +0200, Justin Vassallo wrote:> When set up with multi-pathing to dual redundant controllers, is > layering zfs on top of the 6140 of any benefit? AFAIK this array does > have internal redundant paths up to the disk connection. > > > > justin >Multipathing and redundant controllers in the 6140 gets you HARDWARE redundancy, so you are (less) susceptible to a piece of hardware killing your setup. You should _still_ use ZFS redundancy to get all the other benefits, from self-healing to true block integrity, none of which is provided by the hardware (any hardware, for that matter). -- Erik Trimble Java System Support Mailstop: usca22-123 Phone: x17195 Santa Clara, CA Timezone: US/Pacific (GMT-0800)
Depends on what benefit you are looking for. If you are looking ways to improve redundancy you can still benefit from ZFS a) ZFS snap shots will give you the ability to withstand soft/user errors. b) ZFS checksum... c) ZFS can mirror (synch or async) a 6140''lun to an other storage for increased redundancy d) You can put an other level of raid over 6140''s internal raid to increase redundancy e) Use ZFS send recieve to backup data some other place. Best regards Mertol <http://www.sun.com/> http://www.sun.com/emrkt/sigs/6g_top.gif Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +902123352222 Email mertol.ozyoney at sun.com From: zfs-discuss-bounces at opensolaris.org [mailto:zfs-discuss-bounces at opensolaris.org] On Behalf Of Justin Vassallo Sent: Wednesday, July 02, 2008 3:23 AM To: zfs-discuss at opensolaris.org Subject: [zfs-discuss] zfs on top of 6140 FC array When set up with multi-pathing to dual redundant controllers, is layering zfs on top of the 6140 of any benefit? AFAIK this array does have internal redundant paths up to the disk connection. justin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20080702/74afa824/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.gif Type: image/gif Size: 1257 bytes Desc: not available URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20080702/74afa824/attachment.gif>