maximum transfer length

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masde
Posts: 1
Joined: Fri Dec 14, 2007 10:43 am

Fri Dec 14, 2007 11:15 am

Hi,
i can't add new devices! In my log i can see the error messages:

12/14 10:59:47.243 1034 SPTI: '\\.\PhysicalDrive0': The adapter supports maximum transfer length 61440 bytes less than minimal allowed (MinBufSize = 65536 bytes)!

12/14 10:59:47.243 1034 SPTI: '\\.\PhysicalDrive1': The adapter supports maximum transfer length 61440 bytes less than minimal allowed (MinBufSize = 65536 bytes)!

12/14 10:59:47.243 1034 SPTI: '\\.\Tape0': The adapter supports maximum transfer length 61440 bytes less than minimal allowed (MinBufSize = 65536 bytes)!

The devices in RAID5 is connected to a SCSI controller Serveraid6i on IBM X226

Thanks
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anton (staff)
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Posts: 4010
Joined: Fri Jun 18, 2004 12:03 am
Location: British Virgin Islands
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Fri Dec 14, 2007 11:37 am

1) DO NOT SHARE HARD DISKS IN SPTI MODE.

2) Check your adapter drivers and increase buffer size. At least to the 256KB. <64KB transfer size is performance killer.
masde wrote:Hi,
i can't add new devices! In my log i can see the error messages:

12/14 10:59:47.243 1034 SPTI: '\\.\PhysicalDrive0': The adapter supports maximum transfer length 61440 bytes less than minimal allowed (MinBufSize = 65536 bytes)!

12/14 10:59:47.243 1034 SPTI: '\\.\PhysicalDrive1': The adapter supports maximum transfer length 61440 bytes less than minimal allowed (MinBufSize = 65536 bytes)!

12/14 10:59:47.243 1034 SPTI: '\\.\Tape0': The adapter supports maximum transfer length 61440 bytes less than minimal allowed (MinBufSize = 65536 bytes)!

The devices in RAID5 is connected to a SCSI controller Serveraid6i on IBM X226

Thanks
Regards,
Anton Kolomyeytsev

Chief Technology Officer & Chief Architect, StarWind Software

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