F/W Streaming RAID@8F82.ADF - IBM
SCSI-2 F/W Streaming-RAID /A 'Cheetah' |
Fast/Wide Streaming RAID Adapter/A
"Cheetah" FRU 06H3059
Function of NVSRAM
LED Does Not Work
Type 1 Incompatibility?
the RAID Configuration
Bios Flash Disk
in a 85 / 95 /95A
in a Server 500
and RAID adapter configurations (takes you to 8641 page)
Getting CD Rom to WORK On Server 500
Drives on Cheetah?
Drive Size Limits under NT
Streaming RAID Adapter/A "Cheetah"
FRU 06H3059 Sidecard FRU 06H3060
IBM SCSI-2 F/W Streaming-RAID Adapter/A
|J1 Channel 1 68 pin
J2 Channel 2 68
connected. Or used.
DASD Status Connector
DASD Status Connector
Possible serial port. Unused.
|J9 Channel 2 external
Y1 50 MHz
F1 Channel 2
1 PTC resistor
has two channels. Each channel is controlled by an NCR53C720. The header
J1 is Channel 1. It usually is attached to an internal array, but with the
addition of a side card, it can controll an external array. The second
channel uses J2 OR the external port, J9. This is still one channel, so
one can use either the internal port, OR the external port. Do NOT try to
use both J2 and J9 at once.
NVSRAM is a Benchmarq 28
pin 8Kx8 bq4010YMA-200, Spec sheet
Another equivalent is a Dallas DS1225Y-200, spec sheet
Each NV SRAM has a self–contained lithium
energy source and control circuitry which constantly monitors VCC for an out–of–tolerance condition. When such a condition
occurs, the lithium energy source is automatically switched on and write
protection is unconditionally enabled to prevent data corruption.
The mini C68 for the Channel edgecard connectors is the
part# 15-92-3068, called a half pitch Centronics, or a VESA Media
Connector. Suprise! AMP makes a similar part (mini-C68) AMP Part 1-557089-2
Any cable with a .025 pitch, 28 to 30 AWG will work with either
A Better Cable Hack?
> A small, shotty attempt to get something uploaded
concerning the PS/2. HERE
My Take on it:
starting to have neurons fire. Actually, Allen provided the push. Al went
and slit the conductors for better flexibility (in pairs).
Could you slit the flat cable up towards the controller
and get the very flexible cable bundle of the IBM original? The black
sheathing is available from Jameco for about $1 a foot. Well worth it,
IMHO. (Start the slit with an X-Acto and use the reverse of the blade to
finish parting the conductors???)
The sheathing is
Techflex Cable Sleave, looks to be the 3/8" size. Sold in a 25' spool.
Product # CCPT2X per spool $14.95 Techflex is HERE
What kind of signal
degredation might occur? Each signal pair hopefully cancels it's noise
If the Brandt manuever can be done from the
top drive connector to the adapter, it might be a close match to the real
HD LED Doesn't
From Peter (or Tim?)
The fixed disk
light is non-functional with both the Server 95 A "Passplay" and
Streaming-RAID "Cheetah" MCA RAID adapter. I suspect this is also
the case with other OEM'ed Mylex RAID adapters.
BUT if you take an LED off of J6, pin
1 and 2, it will light when the drives are accessed. Just run a lead up to
between the LED blocks in the display panel. Watch the polarity. If the
LED doesn't light, switch the header around. You do not need a resistor
I tried this, but the LED didn't have
enough umph. Pretty dim through the LED Panel. Maybe some sort of a drive
Just had a thought- twist the existing HD LED
out of the Op Panel and put the LED that is connected to J6 in
thought that I'd better warn you. After checking out the Cyrix 5x86 at 4x
clocking (in Type-1 non-SOD w/cache) my PassPlay RAID adapter seems to
have been "duffed up". I only get a part of the BIOS v1.05
initialisation/installation message and the machine hangs (with *any* CPU)
at CP:96. Looks as though the Flash ROM has been partially overwritten
(just a guess).
for more details
the RAID Configuration
Both the FWR (Passplay)
and FWSR (Cheetah) are only configurable through the RAID Utilities disk.
You CANNOT see the SCSI Disks under "Set and View SCSI Devices" like
normal SCSI drives. Boot with FWSR Option
Disk, #1 ver. 2.31 in order to view or configure the array.
Both adapters use the same Utilities disk of the later
IBM F/W Streaming RAID Adapter /A (Codename "Cheetah" - with external
port) since both are based on Intel i960 / Mylex / NCR technology. There
was a single-disk version 2.22, which should be unique for all /A-Raid
adapters of that kind, but not the PCI-versions. The RAIDADM
(manager) should work on both /A-adapters.
Utility version 2.31 consists out of two disks:
Disk, #1 ver. 2.31
Disk, #2 ver. 2.31
FWSR Option Disks
Not sure if this fits-
Supplemental Diskette Version 2.0 And the Readme.txt
RAIDSEND is a utility that provides an OS/2 ONLY command-line interface
for performing various tasks on a IBM F/W Streaming RAID Adapter/A, the
IBM SCSI-2 F/W PCI-Bus RAID Adapter, and the Mylex PL adapter for the IBM
PC Server 704.
Fast/Wide Streaming RAID
Flash Bios for "Cheetah"FRU 06H3059
and the Cheetah differ in the microcode, which *may not* be
interchanged. The Passplay (FWR) adapter uses a microcode-level 1.6x
through 1.99, the Cheetah (FWSR) uses 2.xx levels. If you flash the one
adapter with the code from the other you end up in non-functional
Flash BIOS 2.21 For RAID controller WITH external
Cheetah in a
The RAID bay for the 85/95/95A does not have a
place for the status cable to attatch. The RAID bay has a 68 pin edgecard
at the back where the molex style SCSI connector attaches to. The 95 RAID
bays automatically terminate the SCSI drives inside. Do NOT enable
termination on the individual drives!
I installed a
CD Rom in Bay 7. I used a 68 to 50 pin adapter from the RAID cable
connector. I have installed both NT Workstation 4 and OS/2 on it. Both
were able to detect and use the CD Rom during setup. FWIW, I had only one
bay with three drives in it.
Cheetah in a Server
Setting the CD Rom ID in a Server 500
I think I saw a patch somewhere to "fix" a CD on the
FWSR under NT.
From Rich Nagle
Following repeated failures of NT 4 Server setup to
recognize the CD Rom connected to the passthrough connector on the top
backplane, I noticed that the CD Rom was showing up as one SCSI ID# higher
than it was when I checked it under the RAID Utility View
After checking the
SCSI ID jumper on the backplane (set to LO for IDs 0 thru 5 on the
backplane), a sudden flash of inspiration occured- I set the CD Rom to ID
5, went back under the RAID Utilities, and the CD Rom was now ID6. I then
deleted, then recreated the array. Now when I ran NT Setup the CD Rom was
>> Is anyone running linux on one of these
Not on machines with the IBM Raid controller with
the old 2.43 firmware. No Linux driver available
The IBM Fast/Wide Streaming Raid Adapter PCI as
used in the Server 320/520 MCA-PCI versions is derived from the Mylex
DAC960PL - it only has 128K Flash ROM (one 28F010 chip) but a second open
socket. Firmware 3.x requires 256K Flash. I'd tried to plug in a second
28F010 ... but I think the old software contained in that chip confused
the adapter a bit ... it behaved a little "strange" (long boot time
What I do not have is an Eprommer that is capable
to write the Flash-ROMs of the 28Fxxxx series or I could a) write a spare
2.4x Flash (to keep for the "worst case") and b) clear the 28F010 ROMs I
pulled from some old boards. Else I would stuff in a blank ROM in the
second socket, have the old 2.xx in the first and run a firmware update
3.x from the DAC960PL on that adapter.
The machines with the older RAID-adapters
("Passplay" and "Cheetah") based on MCA technology are out of the
discussion anyway. They are based on the DAC960M technology basically but
an older draft of that concept. They use some of the chips of the -M and
early -Px adapters (PL / PD) and they are developed by Mylex - but the
firmware 3.x is PCI-specific, not MCA. So you can practically forget about
using them under Linux since the driver is *particularly* written for the
3.x firmware level.
>What kind of drives does
the RAID take? Is F/W DIFFERENTIAL SCSI the right kind? Or are LVD (low
voltage differential) different and it needs them instead? I've never
dealt with RAID before.
Remember the "Cheetah"-Adapter's "Real Trade
Name" ? IBM Fast/Wide Streaming Raid Adapter /A.
It it an ordinary F/W indended for single-ended
SCSI devices. It does however take U/W LVD drives, because these are
downward-compatible to single-ended, which the old "high-voltage
differential" are *not*.
If you get - for example - a
set of U/W "Low Voltage Differential" (LVD) IBM DDRS 4.5 or 9.1GB drives
then they will nicely run with the Cheetah. I have some of them in
"Starship" - my Server 520 attached to the Fast/Wide RAID Adapter PCI. No
problem. You can even mix them
"ordinary" F/W or U/W drives. Same for the Cheetah and even the older
Limits under NT
Tony speaks with conviction when he
I've got Cheetah running a rack
of 9G drives in a MCA Server 320. One issue seems to be it won't
configure a logical drive larger than 32G (you can have several of these
though). Not exactly crippling for modest use, but a limitation none
the less. I haven't tried to see of NT's volume spanning tricks
could be layered atop some of these 32G drives - might be one way around
|SCSI bus path / speed
||16 bit / 20 MB/sec|
|I/O bus path / speed
||32 bit / 40 MB/sec streaming |
(80 MB/sec on PC Server
||Streaming data xfer Address and data parity|
||RAID 0, 1, Hybrid 1, 5 |
4 ind (A, B, C, D) / 8 logical
|Tagged Command Queuing
||i960CA at 25 MHz|
||Type 3 (full length)|
||Two (one internal; one internal or external) |
||Two internal - 16 bit wide |
(sidecard not included on
One external - 16 bit wide
use two connectors at once
||14 per adapter (7 per max per channel)|
||4 MB (with parity) 60 ns soldered on.|
|Cache write policy
||Write-through or write-back|
8F82 IBM SCSI-2 Fast/Wide Streaming-RAID Adapter/A
the interrupt level for the adapter.
<"Level E">, A, B
BIOS Base Address
BIOS base address. Each adapter must have a unique address range.
C2000-0C3FFF, C4000-0C5FFF, C6000-0C7FFF, C8000-0C9FFF, CA000-0CBFFF,
CC000-0CDFFF, CE000-0CFFFF, D0000-0D1FFF, D2000-0D3FFF, D4000-0D5FFF,
D6000-0D7FFF, D8000-0D9FFF, DA000-0DBFFF, DC000-0DDFFF, DE000-0DFFFF
address. Each adapter must have a unique address range.
<"1C00-1C1F">, 3C00-3C1F, 5C00-5C1F,
7C00-7C1F, 9C00-9C1F, BC00-BC1F, DC00-DC1F, FC00-FC1F
DMA Arbitration Level
DMA channel the adapter will use to transfer data.
<"Level 8">, 9, A, B, C,
D, E, 1, 3, 5, 6, 7
How many towers of seven drives will be presented to the user. Any
messages regarding drive status are always presented in terms of bays in
the tower. When each channel of the Streaming-RAID Adapter/A is connected
to a different tower select the '2 Towers' Configuration and when both
channels are connected to one single tower select the '1 Tower'
Towers">, 1 Tower
Data Parity Exception Handling
Enable or disable the Micro Channel
data parity generation
NOTE: System must
support this option.
Micro Channel Streaming
Eenable or disable the Microchannel streaming. NOTE: If the system does not support this then this
option will NOT be available.
<"Enabled ">, Disabled
INT 13 Support
limited support for BIOS INT 13 function calls and is required if boot
devices are connected to Streaming-RAID Adapter/A.
NOTE: If the system does not support this (eg. not a
T1 upgrade-66 or any T4 complex) then this option will NOT be available.
< "Disabled">, Enabled