Hello, I am trying to find information regarding optimal segment size for MDS on RAID10 external array. Looking in documentation and searching through mailinglist and google didn't help.
I found in Oracle DB documentation (http://www.oracle.com/technology/deploy/availability/pdf/Engenio_LCS.pdf , p.11) that Oracle is using 1MB I/O size. That means that optimal segment size for Oracle setup which has 4 data drives will be 1MB/4 = 256KB. But I am not sure what is the maximum I/O size for mdt. Our setup MDS will be: 6 x 15K FC disks in RAID10 on Engenio 399x controller. For mdt/mgs formatting we want to use -E stride= and stripe-width= , which we will calculate from RAID segment size. Can somebody from Lustre guru advise optimal segment size for RAID 10 external array? Thanks, Alex. _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
