Information came from sql error log.

Hi,
Can someone explain the following info came from sql server error log? This
is the two node (active/passive) cluster SQL Server 2005 (with SP1) and OS is
Windows 2003 (64 bit, attached to SAN) named instance database server.
11/28/2006 12:10:21 PM [298] SQL Server Error: 10004, Communication link
failure [SQLSTATE 08S01]
11/28/2006 12:10:21 PM [298] SQL Server Error: 64, Communication link
failure [SQLSTATE 08S01]
11/28/2006 12:10:21 PM [298] SQL Server Error: 64, TCP Provider: The
specified network name is no longer available. [SQLSTATE 08S01]
Is above error means the net work not available for database instance while
application batch job running from other server connect to database server?
11/29/2006 2:05:06 AM SQL Server has encountered 4677 occurrence(s) of I/O
requests taking longer than 15 seconds to complete on file
[M:\bsi\data\bsi_Data.MDF] in database [bsi](5). The OS file handle is
0x00000000000009F4. The offset of the latest long I/O is: 0x000000badbc000
11/29/2006 2:47:39 AM SQL Server has encountered 993 occurrence(s) of I/O
requests taking longer than 15 seconds to complete on file
[M:\market_place\data\mp_orders_dat.ndf] in database [market_place](13). The
OS file handle is 0x0000000000000A9C. The offset of the latest long I/O is:
0x000000307e4c000
Is above info means the SAN drive is very busy and took long time to
complete the database processes such as query, insert, update and delete, etc?
Thanks!
Chen
Check this out;
http://blogs.msdn.com/sqlserverstorageengine/archive/2006/06/21/642314.aspx
Also review this KB article:
http://support.microsoft.com/default.aspx/kb/897284
Linchi
"Chen" wrote:

> Hi,
> Can someone explain the following info came from sql server error log? This
> is the two node (active/passive) cluster SQL Server 2005 (with SP1) and OS is
> Windows 2003 (64 bit, attached to SAN) named instance database server.
> 11/28/2006 12:10:21 PM [298] SQL Server Error: 10004, Communication link
> failure [SQLSTATE 08S01]
> 11/28/2006 12:10:21 PM [298] SQL Server Error: 64, Communication link
> failure [SQLSTATE 08S01]
> 11/28/2006 12:10:21 PM [298] SQL Server Error: 64, TCP Provider: The
> specified network name is no longer available. [SQLSTATE 08S01]
> Is above error means the net work not available for database instance while
> application batch job running from other server connect to database server?
> 11/29/2006 2:05:06 AM SQL Server has encountered 4677 occurrence(s) of I/O
> requests taking longer than 15 seconds to complete on file
> [M:\bsi\data\bsi_Data.MDF] in database [bsi](5). The OS file handle is
> 0x00000000000009F4. The offset of the latest long I/O is: 0x000000badbc000
> 11/29/2006 2:47:39 AM SQL Server has encountered 993 occurrence(s) of I/O
> requests taking longer than 15 seconds to complete on file
> [M:\market_place\data\mp_orders_dat.ndf] in database [market_place](13). The
> OS file handle is 0x0000000000000A9C. The offset of the latest long I/O is:
> 0x000000307e4c000
> Is above info means the SAN drive is very busy and took long time to
> complete the database processes such as query, insert, update and delete, etc?
> Thanks!
> Chen
>