scsi drive errors ... I think !!

[sonun]

I hope I am in the right place for this post. I am really not sure about this and hence !!
Well the thing is that I am copying stuff from one server's raidtower to another server's raidtower over the network. Down the line sometime, the destination server freezes, the source is fine and the syslog reposts this,
Jun 15 00:00:00 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.
Jun 15 00:00:00 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x9 SSTAT0 = 0
x10 SSTAT1 = 0x8a
Jun 15 00:00:00 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.
Jun 15 00:00:00 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x8 SSTAT0 = 0
x10 SSTAT1 = 0x8a
Jun 15 00:00:00 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.
Jun 15 00:00:00 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x8 SSTAT0 = 0
x10 SSTAT1 = 0x8a
Jun 15 00:00:00 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.
Jun 15 00:00:00 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x8 SSTAT0 = 0
x10 SSTAT1 = 0x8a
on and
on and
on
until
Jun 15 00:00:33 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x9 SSTAT0 = 0
x10 SSTAT1 = 0x8a
Jun 15 00:00:33 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.
Jun 15 00:00:33 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x8 SSTAT0 = 0
x10 SSTAT1 = 0x8a
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 c0 67 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 c2 57 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 c4 47 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 c6 37 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 c8 0f 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 c9 e7 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 cb bf 00 00 f8 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 cd 97 00 00 70 00

...
...
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Write (10) 00 15 20 d2 97 00 00 20 00
Jun 15 00:00:33 charisma kernel: scsi : aborting command due to timeout : pid 0,
scsi1, channel 0, id 3, lun 0 Read (10) 00 15 20 01 af 00 00 08 00
Jun 15 00:00:33 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.
Jun 15 00:00:33 charisma kernel: SCSISEQ = 0x5a SEQADDR = 0x9 SSTAT0 = 0
x10 SSTAT1 = 0x8a
Jun 15 00:00:33 charisma kernel: (scsi1:-1:-1:-1) Referenced SCB 27 not valid du
ring SELTO.

...
...

Can someone please help me debug this. Btw, Charisma is the destination server.
Also, can someone please explain how to read this (scsi1:-1:-1:-1). The raidtower has 8 drives in RAID 5 array.

Please advise.
Thanks.

 

[sonun]

sorry for the double post. It was meant to be here.
The OS is RH7.2.
Thanks.