Tablespaces across same raid...
i just have one raid controller with 6 disks
attached... i see all of it as single drive with three
partitions create by me...
will creating tablespaces help me.... also is there a
way i can say this table to this disk???
thx for ur help...
Himanshu
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Himanshu Baweja <himanshubaweja@yahoo.com> writes:
i just have one raid controller with 6 disks
attached... i see all of it as single drive with three
partitions create by me...will creating tablespaces help me.... also is there a
way i can say this table to this disk???
In a RAID, all data goes across all disks, so in your case the answer
is no. I doublt tablespaces would help, because again all data goes
across all disks.
What you might consider, if you can break up the RAID, is to use two
disks for a mirrored pair (RAID-1). Put the WAL logs (the pg_xlog
directory) on that volume. Then make a RAID-5 with the other four
disks for the rest of the database. The pg_xlog directory is
constantly written to so having it on independent disks is very
helpful with performance.
-Doug