We moved from a T64 (ES40 4
CPU) to a Sun (6800 2 blades 8 CPU) recently. There were no problems with
the export/import of the 1/2 TB database.
One big thing was that the
max block size on Sun for 8174 is 16K. We had used 32K on T64. So we had to
rethink our multi_block_read_counts, etc. FTS became kind of slower but I cant
say it was due to this move. We were undertaking a big change that time anyway
and we tuned the SQL to get a better performance.
One another thing to keep
in mind is are you going to change the underlying filesystem also - meaning are
you planning to move from Compaq Storage Works to some other ? We did that
(moved from StorageWorks to Hitachi) and took a performance beating initially.
The problem was due to a misconfiguration on the Hitachi side and once the
rectified it it has become acceptable. Still I dont see the IO rates the
StorageWorks used to deliver.. :-(
Babu
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