Hello,
The first thing that comes to my mind is whether or
not one of the two DB's is sparse, compared to the
other, or simply more compressable.

Apart from that and if both storage nodes can deliver
the data to the SAN equally fast, I'd start checking
for I/O errors in the SAN infrastructure. Maybe
there's a bad HBA or GBIC? if not, do both S/N have
the same I/O performance of the disk sub-system? CPU
speed? RAM? NIC settings (index going to backup
server)? Basically, compare I/O performance that could
influence the performance. Just my $0.02... :)

// Matts

 --- Marc Levitan <marc.levitan AT PFPC DOT COM> skrev: > I
have 1 backup that gets a rate of 28GB/hr  and
> another that is 43GB/hr.
>
> Both are Solaris 6 Servers running Networker 6.1.
> Networker Server is Solaris 8 Networker 6.1.
>
> Both Clients are running Informix and both clients
> are storage nodes that
> share DDS tape drives across the SAN.
>
> One client is a SUN E6500 (slower) the other is a
> SUN E10K (faster).
>
> Both have parallelism of 2.
>
> What can I check to determine why one is so much
> faster than the other?
>
> Thanks,
> Marc Levitan
> Storage Management Specialist
> PFPC Global Funds Services
>
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