Does anyone out there have any marketing/technical information on the 6203 and 6205 SCSI adapters ? I was looking to do a comparison to see if upgrading to the 6203 would buy us any more performance.
(#6203) - PCI Dual Channel Ultra3 SCSI Adapter
The PCI Dual Channel Ultra3 SCSI Adapter (#6203) is a 64 bit adapter and is an
excellent solution for high performance SCSI applications. The PCI Dual
Channel Ultra3 SCSI Adapter provides 2 SCSI channels (busses). Each
SCSI bus can either be internal (on systems that support internal SCSI
device or backplane attachments) or external and will support a data rate
of up to 160 MBytes per second, up to twice the maximum data transfer
rate of the previous Dual Channel Ultra2 SCSI adapter
(80 MBytes per second).
In order to achieve an Ultra3 SCSI bus data rate of up to 160 MBytes
per second and also maintain a reasonable drive distance, the adapter
utilizes Low Voltage Differential (LVD) drivers and receivers. To fully
utilize this Ultra3 160 MBytes per second performance, all attaching
devices or subsystems should also be Ultra3 LVD devices. But, if Ultra2
and Ultra3 devices coexist on the same bus, each device will operate
at its rated speed. For lower speed single-ended (SE) devices,
the SCSI bus will switch to single-ended (SE) performance and
interface at the lower SE bus data rate of the device.
Two industry-standard VHDCI 68 pin connectors are mounted on the
adapter's end bracket, allowing attachment of various LVD and
SE external subsystems. A .3 meter converter cable, VHDCI to P,
Mini-68 pin to 68 pin, (#2118) can be used with older external
SE subsystems to allow connection to the VHDCI connector on the
PCI Dual Channel Ultra3 SCSI Adapter.
Note: If any Single Ended (SE) SCSI subsystem is attached to an external
port of this adapter, the SCSI port will auto-throttle to a "Fast"
interface speed running no faster than 20MB/s max. This auto-throttle
function is performed to ensure best signal quality between
host adapter and attaching subsystem. The second external port is
unaffected unless a SE subsystem is also attached to it.
If so, it would also auto-throttle as described above.
The PCI Dual Channel Ultra3 SCSI Adapter (#6203) also is a native boot
adapter with AIX 4.3.3 or AIX 5.1 (with appropriate updates) in the
supported pSeries or RS/6000 systems.
Attributes provided: Attachment of internal SCSI devices
(on systems that support an internal SCSI device or backplane
attachment with this adapter) and external SCSI devices
Attributes required: One available PCI slot
------------------------------
(#6205) PCI Dual Channel Ultra2 SCSI Adapter
(For IBM US, No Longer Available as of December 3, 2001)
The PCI Dual Channel Ultra2 SCSI Adapter (#6205) is a 64 bit adapter
and is an excellent solution for high performance SCSI applications.
The PCI Dual Channel Ultra2 SCSI Adapter provides 2 SCSI channels
(busses). Each SCSI bus can either be internal or external
(on systems that support internal SCSI device or backplane attachments)
and will support a data rate of up to 80 MBytes per second,
up to twice the maximum data transfer rate of previous Ultra SCSI
adapters (40 MBytes per second).
In order to achieve an Ultra2 SCSI bus data rate of up to 80 MBytes
per second and also maintain a reasonable drive distance, the adapter
utilizes Low Voltage Differential (LVD) drivers and receivers. In order
to utilize this Ultra2 80 MBytes per second performance, all attaching
devices or subsystems must also be Ultra2 LVD devices. If any device
is not Ultra2 LVD, the adapter will switch its SCSI bus to single-ended (SE)
performance and interface at the lower SE SCSI bus data rate of the device.
Two industry standard VHDCI 68 pin connectors are mounted on the
adapter's end bracket allowing attachment of various LVD and SE external
subsystems. A .3 meter converter cable, VHDCI to P, Mini-68 pin to 68 pin,
(#2118) can be used with older external SE subsystems to allow connection
to the VHDCI connector on the PCI Dual Channel Ultra2 SCSI Adapter.
Note: If any Single Ended (SE) SCSI subsystem is attached to an external
port of this adapter, the SCSI ports (both the external port being attached
to and its associated or shared internal port) will auto-throttle to a "Fast"
interface speed running no faster than 20MB/s max. This auto-throttle
function is performed to ensure best signal quality between host
adapter and attaching subsystem. The second external port and its
associated or shared internal port is unaffected unless a SE subsystem
is also attached to it. If so, it would also auto-throttle as described above.
Any supported RS/6000 system can be set up to boot from PCI Dual
Channel Ultra2 SCSI Adapter (#6205). If you are running with
AIX 4.3.3 or later software, this adapter has native boot support as
part of that level of AIX software. If you are running with 4.2.1 software,
the below procedure applies in order to boot using the PCI Dual Channel
Ultra2 SCSI Adapter:
The designated boot SCSI disk can be located under the covers
of a processor unit or in an external SCSI storage unit.
AIX version 4.2.1 must be loaded to the designated SCSI boot disk
using AIX's Network Install Manager (NIM) before booting from
the SCSI boot disk.
The system with a designated SCSI boot disk must have a network
connection with another RS/6000 system performing the NIM Master
function to perform the install. On RS/6000 SP systems, a similar
network install is performed from a control workstation.
Once AIX with updates is installed on the designated SCSI boot
disk and the system is configured for booting, booting will take
place from the boot disk drive without any support from the
control processor or NIM Master and the system does not
have to be connected to the network at boot time.
Attributes provided: Attachment of internal SCSI devices
(on systems that support an internal SCSI device or backplane
attachment with this adapter) and external SCSI devices
Attributes required: One available PCI slot
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