John , would you mind telling which NAS and SAN solutions have you looked at or been pointed to by the list, and which approach / vendor / product is the leader so far ?
DBAndrey * 03-9254520 * 058-548133 * mailto:[EMAIL PROTECTED] -----Original Message----- Sent: Mon, May 13, 2002 6:12 PM To: LazyDBA.com Discussion Thanks, The comment about SAN problems are consistent with what I've also heard - SAN solutions tend to be complex, difficult to manage and are easy to screw up in a right royal fashion. NAS filers tend not to work as fast for DBMS use (I've had two replies saying their NAS solution was replaced by a SAN for performance), but they're very easy to run - very low maintenance. I've also received details of a new protocol Direct Access File System (DAFS) which produces performance on NAS similar to directly attached disk mounted as a raw device. If this is true (and there's very little independent review evidence available), then even the performance becomes a non-issue. Thanks to all those who've commented - if anyone else has any experience please chip in. John R. -----Original Message----- Sent: 13 May 2002 16:12 To: LazyDBA.com Discussion Hmmmm....well, sounds like first thing to consider, is avoiding windows as the OS that manages and controls it.... :-) Kelly On Mon, May 13, 2002 at 08:04:24AM -0700, after pounding the keys randomly, MacGregor, Ian A. came up with.... > I don't much about using SAN with Oracle. However be careful how you configure it. We had "experts" set up SAN for our Windows NT Central File system. A few months later, the system was brought down for a fairly minor problem. When restarted, it up it initiated chkdsk, a process which took over three days to complete! Users, unable to get to their files, were less than impressed. > > Ian MacGregor > Stanford Linear Accelerator Center > [EMAIL PROTECTED] > > -----Original Message----- > From: John Ryan [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 13, 2002 1:24 AM > To: LazyDBA.com Discussion > Subject: Alternatives to Directly Attached Disk - NAS or SAN ? > > > DBAs, > > I'm in the lucky(?) position of deciding the storage strategy for a mid > sized company (100 staff and growing), who're generating large data volumes. > Non-Oracle volumes have reached nearly 500Gb in 12 months, and a major > Oracle based system has just come "on tap" and expected to generate 1Tb in > 12 months, then perhaps the same again every year - or frighteningly even > more!!! > > Directly Attached Disk is not a sensible way forward, so we're looking at > Network Attached Storage (NAS) and Storage Area Network (SAN) solutions. In > short I'm finding the following:- > > o Both give high reliability and availability with RAID and dual redundant > almost anything > o Both can share space between a File Serving and Unix (ie. database) > applications although the NAS shares files not just space > o Both provide excellent management tools including "Snapshots" and fast > restore > > But SANs are supposedly faster than NAS solutions for raw I/O and therefore > better for database applications. > > Has anyone any direct experience with SAN or NAS solutions? > > I'm also talking to vendors, but I wondered if there was any general > consensus in the "real" world. > > -------- Oracle documentation is here: http://tahiti.oracle.com/pls/tahiti/tahiti.homepage To unsubscribe: send a blank email to [EMAIL PROTECTED] To subscribe: send a blank email to [EMAIL PROTECTED] Visit the list archive: http://www.LAZYDBA.com/odbareadmail.pl Tell yer mates about http://www.farAwayJobs.com By using this list you agree to these terms:http://www.lazydba.com/legal.html -------- Oracle documentation is here: http://tahiti.oracle.com/pls/tahiti/tahiti.homepage To unsubscribe: send a blank email to [EMAIL PROTECTED] To subscribe: send a blank email to [EMAIL PROTECTED] Visit the list archive: http://www.LAZYDBA.com/odbareadmail.pl Tell yer mates about http://www.farAwayJobs.com By using this list you agree to these terms:http://www.lazydba.com/legal.html -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Andrey Bronfin INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
