Re: SCSI Adapter

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• In reply to: Librado Pamintuan: "SCSI Adapter"
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Date:         Wed, 21 Jul 2004 11:29:53 +0200
To: aix-l@Princeton.EDU

Hello Librado,
according to the Sales Manual, both channels are capable of working
simultaneously.

Check for termination of both channels.

(#6203) PCI Dual Channel Ultra3 Adapter
(No Longer Available as of December 12, 2003)

The PCI Dual Channel Ultra 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 two 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 Ultra3 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, (#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 a 20MB/s maximum. 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
For 7029-6C3: (#6203)
Minimum required: 0
Maximum allowed: 3 (Initial order maximum: 3)
OS level required: AIX 5.2, or later. Linux - Refer to the following URL
for systems and features that operate with Linux:
www.ibm.com/servers/eserver/pseries/hardware/factsfeatures.html
Initial Order/MES/Both/Supported: Both
CSU: Yes
Return parts MES: No

Librado Pamintuan wrote:
> Good morning,
>
> We have 7029-6C3 server with a FC 6203 adapter. Channel A is connected
> internally to DVD-RAM drive, we tried using the second channel B to
> attached our external tape library. The tape library is working good,
> but some how the DVD-RAM stopped working. We cannot create Mksysbs or
> write on a DVD-RAM disc.
> Is this adapter limited to one channel only?
>
> regards,
>
>
>
>
> Librado Pamintuan
> Technical Support Analyst II
> Information Systems Dep.
> Operations Group
> City of Regina
>
> Phone: (306) 777-7573
> General Fax: (306) 777-6804
> eFax: (306) 546-6002
> eMail: lpamintu@regina.ca <mailto:lpamintu@regina.ca>
>
>
> DISCLAIMER: The information transmitted is intended only
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>

--
S pozdravem / Best Regards,
Martin Trcka, IT Consultant
Tech. Support Department
GC System a.s., Spitalka 41, 60200 Brno, Czech Rep.
mob: +420 602 452 361
fax: +420 543 537 333
email: trcka@gcsystem.cz

• Previous message: Kumar, Praveen (cahoot): "Losing time"
• In reply to: Librado Pamintuan: "SCSI Adapter"
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