https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386638#M13705 Sameer,<BR /><BR />Monitor these things so you can validate the DBA's claims:<BR /><BR />Per Disk Stats:<BR /> iostat 5 100 during <BR />(each LUN should have peaks that are close to whatever number of FC's you have to your SAN..)<BR /><BR />To see if you have Queuing and disk response times:<BR /><BR /> sar -d 5 100<BR />(No EVA LUN should have wait and access times above 20ms consistently)<BR /><BR />And finally if you have glance (glance -u, -i, -d or -v)<BR /><BR /><BR />HTH.<BR /> Tue, 28 Sep 2004 10:29:08 GMT Alzhy 2004-09-28T10:29:08Z https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386637#M13704 Hi Guys,<BR /><BR />I am facing performance problem with my system saying response is slow.. I have rp7410 ( 4 CPUs and 8 GB RAM HPUX 11i ) with one hard partition connected to 2 EVA 5k boxes 2c2d-c ) through SAN switches and 3 FC HBAs for each EVA<BR /><BR />I have created only one disk group ( as EVa best pratices says ) per EVA with VRAID 1 and protection level 1. <BR /><BR />Oracle 8.1.7.4 datafiles are stored in raw LVOLS created using LVM. I want to know the statistics of EVA performance which show me EVA is performing efficiently???<BR />DBA is complaining of slow I/O from EVA as cause of system slowness.<BR /><BR />Any Doc for oracle and EVA SAN configuration???<BR />I am expecting good replies as HP and Oracle has got close tehnical tie-ups to offer faster response on these platforms ( I have read some article about it )<BR /><BR />Maybe someone from HP would eloborate???<BR /><BR />I need your valuable replies and advise .Let me know if u need more details<BR /><BR /><BR />Regards<BR />Sam<BR /> Sat, 25 Sep 2004 02:03:30 GMT https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386637#M13704 Sameer_Nirmal 2004-09-25T02:03:30Z https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386638#M13705 Sameer,<BR /><BR />Monitor these things so you can validate the DBA's claims:<BR /><BR />Per Disk Stats:<BR /> iostat 5 100 during <BR />(each LUN should have peaks that are close to whatever number of FC's you have to your SAN..)<BR /><BR />To see if you have Queuing and disk response times:<BR /><BR /> sar -d 5 100<BR />(No EVA LUN should have wait and access times above 20ms consistently)<BR /><BR />And finally if you have glance (glance -u, -i, -d or -v)<BR /><BR /><BR />HTH.<BR /> Tue, 28 Sep 2004 10:29:08 GMT https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386638#M13705 Alzhy 2004-09-28T10:29:08Z https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386639#M13706 Perhaps it is time to split your EVA's into more disk groups.<BR /><BR />Mixing Random and Sequential io's on the same physicals normally is a very bad idea.<BR /><BR />So one group, preferably a large one, for data files.. and another one for logs etc<BR />would be the way to go.<BR /><BR />rgds<BR /><BR />lars Wed, 29 Sep 2004 08:34:00 GMT https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386639#M13706 L. B. Andersen 2004-09-29T08:34:00Z https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386640#M13707 Hi Lars,<BR /><BR />I do agree with your logical answer.But when I see EVA document ( Best practices ) which say to have only one disk group for good EVA performance !!!!!!!<BR /><BR />Have done multiple disk groups before? If yes can you provide me details...<BR />What are the preferred setting in HSV110 controllers????<BR />Any issue your face because of this??<BR /><BR />Regards,<BR />Sam<BR /> Wed, 29 Sep 2004 23:44:30 GMT https://community.hpe.com/t5/disk-enclosures/eva-5k-with-oracle-8-1-7-performance/m-p/3386640#M13707 Sameer_Nirmal 2004-09-29T23:44:30Z