CX performance METALUN vs LUN

What is the performance increase using a METALUN vs. LUN? What is the
sweet spot? Configuration? Thanks in advance. This is for a SQL server.

tc wrote in news:e573153d-4ad5-420a-9543-
:

What is the performance increase using a METALUN vs. LUN? What is the
sweet spot? Configuration? Thanks in advance. This is for a SQL server.


If it were me. I'd bind some LUNs on your system and measure the
performance and make a decision based on the results. There are too many
variables to make generalisations.

N.

As Moojit said, it's too hard to make generalisations. Obviously with
more spindles behind the MetaLUN performance is improved over a single
LUN with fewer spindles (assuming a striped MetaLUN) and assuming the
MetaLUN components come from different Raid Groups (they should
*always* come from different Raid Groups) however there is a
processing overhead incurred on the Storage Processors for MetaLUNs..

Work out what disk i/o your database needs and then design the disk
sub-subsystem to suit, i.e. how many IOps? MBps? Are the databases
highly transactional or decision support? Read or write intensive or a
bit of both?

Jono