Anyone aware of the related tools for HITACHI Storage Boxes? Mucho Appreciado in advance...... -----Original Message----- Sent: Friday, September 14, 2001 4:39 PM To: Multiple recipients of list ORACLE-L !! Please do not post Off Topic to this List !! We use EMC Symmetrics. When I got here, the folks who set things up initially where under the impression that you will never have to worry about placement/io with a Symm. Wrong! I underwent a painstaking process of relaying out the disks according to conventions DBA normally use taking into consideration index/data/volume of read/write to physical disks. Since you are presented with logical volumes, we use sym commands on each of our hosts connected to the symm to give us a graphical layout of all the logical volumes on the physical disks. EMC has a tool to do this called Resource View. EMC also has a tool called workload analyzer to analyze activity on each fa / disk, etc. And there is also a utility called Symm Optimizer to detect hot spots and optionally, replace that data to a different physical disk. You should find out if you have any of these tools available to you. HTH Michele Armstrong -----Original Message----- Sent: Thursday, September 13, 2001 7:55 AM To: Multiple recipients of list ORACLE-L !! Please do not post Off Topic to this List !! Hi All, Does anybody here on the list have experience with EMC/symmetrix storage units.? We have our databases on this machine and I have a feeling the the I/O performance is not very good. I can not proof it since I do not have any experience/data/access to that machine. We do however have a very cooperative UNIX group but they also lack experience with performance on this machine. Who can give me pointers about I/O throughput that can be reached, configuration pittfalls etc.. Example: RS6000 8CPU's and 4Gb memory with storage on EMC/symmetrix. Job takes about 2 hours to complete. F50 1 CPU 1Gb memory (TEST machine) local disks. same job takes 0.5 hours to complete. Jack ===================================================================== De informatie verzonden in dit e-mailbericht is vertrouwelijk en is uitsluitend bestemd voor de geadresseerde. Openbaarmaking, vermenigvuldiging, verspreiding en/of verstrekking van deze informatie aan derden is, behoudens voorafgaande schriftelijke toestemming van Ernst & Young, niet toegestaan. Ernst & Young staat niet in voor de juiste en volledige overbrenging van de inhoud van een verzonden e-mailbericht, noch voor tijdige ontvangst daarvan. Ernst & Young kan niet garanderen dat een verzonden e-mailbericht vrij is van virussen, noch dat e-mailberichten worden overgebracht zonder inbreuk of tussenkomst van onbevoegde derden. 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