A slow file IO operation was encountered

Hola a todos, el fin de semana hubo algunos cambios en los equipos de comunicación y ahora tengo este error en Event Viewer:
EventID 2170 Source MSExchangeRepl
A slow file IO operation was encountered on file 'I:\Program Files\Microsoft\Exchange Server\V14\Mailbox\DB02\E03005761DA.log' for copy 'DB02\MXSCVMMBOX02'. The observed latency was 8580.605 ms while performing a 'MissingFileNotification'. This may indicate
an overloaded system or a storage-related problem.
Este evento se repite continuamente. Tengo 4 servidores Mailbox los cuales pertenecen a un DAG, las unidades de almacenamiento están presentadas por Netapp conectadas vía iSCSI. El uso de red es mínimo en las tarjetas de red y todas están online y accesibles.
Alguien tiene alguna idea?

Translation
Hi all, the weekend were some changes in
communications equipment and now I have this error
in Event Viewer:
EventID 2170 Source MSExchangeRepl
A slow file IO operation
was encountered on file 'I:
\ Program Files \ Microsoft \ Exchange
Server \ V14 \ Mailbox \
DB02 \ E03005761DA.log' for copy 'DB02
\ MXSCVMMBOX02'. The
Observed was 8580.605 ms
latency while performing a 'MissingFileNotification'.
This May Indicate an overloaded
system or a storage-related
problem.
This event repeats continuously. I have 4
Mailbox servers which belong to a
DAG, the storage units are made by
Netapp connected via iSCSI. Network usage
is minimal network cards and they are all
online and accessible.
Anyone have any idea?
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help.

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HELIOS TechInfo #095en01
========================
Tue, 24 Jan 2006
Data corruption using Apple XSan 1.2
Recently we received feedback from HELIOS partners and customers that
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HELIOS has reported this to Apple who is currently investigating this
issue.
We recommend that every customer who encounters this Xsan data
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When a workaround or fix is available, this information will be
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