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maximum transfer length

Posted: Fri Dec 14, 2007 11:15 am
by masde
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

Re: maximum transfer length

Posted: Fri Dec 14, 2007 11:37 am
by anton (staff)
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