IBM/Mylex Raid in Server520
Fred Mau
520, to replace an Adaptec 2940UW. The drive involved is a single 2-GB IBM
42H3676 (OEM Quantum XP32150W).
The Mylex WON'T see the drive through the 520's hot swap cage and cables
(it says "Drive in Channel 1 Bay 1 not responding"), but it WILL see the
drive if I connect a (self-terminated) F/W cable directly between the drive
and channel 1 of the Mylex, and I can do a DACCF just fine.
Normally I would suspect the cage/cables/termination, HOWEVER the Adaptec
sees the drive just fine through the same arrangement.
Is there something special I need to do to use the Mylex with the S520 cage
? Or maybe I *DO* in fact have a cage/cable/termination issue that the Mylex
is sensitive to, but the adaptec doesn't see ?
By the way, I have a second Mylex DAC960 if anyone is interested. The
second one is slightly different - it was OEM'd for HP, and has a pair of
external connectors that I've never seen before, but internally looks
identical to the IBM.
- FM -
David L. Beem
> I'm trying to install an IBM/Mylex DAC960 PCI Raid adapter into my
> server 520, to replace an Adaptec 2940UW. The drive involved is a
> single 2-GB IBM 42H3676 (OEM Quantum XP32150W). The Mylex
> WON'T see the drive through the 520's hot swap cage and cables (it
> says "Drive in Channel 1 Bay 1 not responding"), but it WILL see the
> drive if I connect a (self-terminated) F/W cable directly between the
Two channels with a wider DASD connection? It may be the same as the
board I have in my MCA 320 (with the controller program on diskette). Do you
have an FRU?
> Is there something special I need to do to use the Mylex with the S520
> cage? Or maybe I *DO* in fact have a cage/cable/termination issue that
> the Mylex is sensitive to, but the adaptec doesn't see ?
The 320 uses the same type of backplane on a different cage assembly.
I'm taking it is a Type 2 ("Delivery Boy" stork on the backplane / clear
spindle on the H-S drive tray handle) setup? Do you have the DASD cable
connected between the controller & backplane(s)? I may have a spare.
David
Da...@gilanet.com
Fred Mau
"David L. Beem" <Da...@gilanet.com> wrote in message
news:3d6fd...@oracle.zianet.com...
> Two channels with a wider DASD connection? It may be the same as the
> board I have in my MCA 320 (with the controller program on diskette). Do
you
> have an FRU?
The Mylex P/N is D040351-0-IBM Rev D.
There's also label that sez 07H1059604 but is too many digits to be an FRU
Firmware chip is labelled: 615114-F02 U47 V2.35 IBM
It has (2) Internal 68-pin F/W connectors J3 and J4 with empty solder pads
for a third at J5. External 68-pin connector.
From what I can tell browsing though www.mylex.com, it seems to be a
"DAC960P-2".
- FM -
Tim Clarke
> > I'm trying to install an IBM/Mylex DAC960 PCI Raid adapter into my
> > server 520, to replace an Adaptec 2940UW.
That is the "standard" RAID adapter for the Server 320/520 and some 720s.
> > The drive involved is a single 2-GB IBM 42H3676
> > (OEM Quantum XP32150W). The Mylex
> > WON'T see the drive through the 520's hot swap cage and cables (it
> > says "Drive in Channel 1 Bay 1 not responding"), but it WILL see the
> > drive if I connect a (self-terminated) F/W cable directly between the
> > drive and channel 1 of the Mylex, and I can do a DACCF just fine...
1) are you using the correct Id. cable in the hot-swap tray? The pinout of
the "rear"/"auxiliary" connector is different on a number of models of OEMed
or true IBM drives. The "front" connectors are pretty standard, but not
quite.
2) are you using the correct "RAID Status Cable" from the backplane(s) to
the adapter? Again, these vary by adapter/controller.
> Two channels with a wider DASD connection? It may be the same as the
> board I have in my MCA 320 (with the controller program on diskette). Do
you
> have an FRU?
>
> > Is there something special I need to do to use the Mylex with the S520
> > cage? Or maybe I *DO* in fact have a cage/cable/termination issue that
> > the Mylex is sensitive to, but the adaptec doesn't see?
Yes, RAID adapters (and some early levels of Drive firmware) can be
infuriating, if the "correct" firmware level, termination and RAID status
cable are not used.
> The 320 uses the same type of backplane on a different cage assembly.
> I'm taking it is a Type 2 ("Delivery Boy" stork on the backplane / clear
> spindle on the H-S drive tray handle) setup? Do you have the DASD cable
> connected between the controller & backplane(s)? I may have a spare.
If that's the Status Cable (rather than the HD68 to Mini-Centronics
backplane), Fred may very well need one.
--
Cheers,
Tim
Fred Mau
"Tim Clarke" <SpamBlock_...@cswebmail.com> wrote in message
news:eHRb9.3050$Q%.101029@newsfep2-gui...
> Hi David, Fred...
> 1) are you using the correct Id. cable in the hot-swap tray? The pinout of
> the "rear"/"auxiliary" connector is different on a number of models of
OEMed
> or true IBM drives. The "front" connectors are pretty standard, but not
> quite.
> 2) are you using the correct "RAID Status Cable" from the backplane(s) to
> the adapter? Again, these vary by adapter/controller.
1- I've tried various left-right, right-left, top/bottom combinations on the
ID cable, no luck. I know the pinout of the drive, but I don't know what the
cable is set up for. I've also tried leaving it disconnected which should
force it to ID 0.
2 - I don't have any status cable at all. I presume this is what J10 on the
rear of the backplane is for ?
Funny thing, since playing around with the Mylex connected to this hot-swap
backplane, my original Adaptec 2940UW will no longer see 68-pin wide drives
in type 2 cages attached to the backplane, but WILL see narrow drives
attached to the backplane in 50-pin (Type 1 ?? ) cages. I wonder if I've
"blown" something on the backplane and/or on the cages? I can see the wide
drive if I take it out of the cage and connect it to the cable exiting from
the backplane (the cable that would go to "B" bay).
When I power up now with a type-2 cage in place, the green LED on the cage
gives me one long then five short blinks and then stays on solid. Is this
telling me anything ?
- FM -
David L. Beem
> That is the "standard" RAID adapter for the Server 320/520 and some 720s.
> If that's the Status Cable... ...Fred may very well need one.
It is, but I may have it on my 320 already (haven't finished searching).
Mine has two backplane connections (like for a 520), maybe they all were
like that?
David
Da...@gilanet.com
Fred Mau
"Tim Clarke" <SpamBlock_...@cswebmail.com> wrote in message
news:eHRb9.3050$Q%.101029@newsfep2-gui...
> Hi David, Fred...
> the adapter? Again, these vary by adapter/controller.
What IS the correct status cable to go from a FRU #06H8388 "Stork" backplane
to an IBM/Mylex DAC960P ?
- FM -
Tim Clarke
> > 2) are you using the correct "RAID Status Cable" from the backplane(s)
to
> > the adapter? Again, these vary by adapter/controller.
>
> What IS the correct status cable to go from a FRU #06H8388 "Stork"
backplane
> to an IBM/Mylex DAC960P ?
FRU 06H9342. 26-way IDC female plug (about 6-8 strand ribbon cable in the
middle of the connector) to 2 x backplane connectors (8-contact zig-zag?).
Or,
FRU 06H9343. 10-way IDC female plus to 3 x backplane connectors (8-contact
zig-zag?) for the PCI ServeRAID (1) adapter.
P.S. Ensure backplane is jumpered "Low" (Id.s 0-5) and for the correct "C, D
or E" position (i.e. 1st, 2nd or 3rd backplane, from top to bottom).
--
Cheers,
Tim
Fred Mau
> P.S. Ensure backplane is jumpered "Low" (Id.s 0-5) and for the correct "C,
D
> or E" position (i.e. 1st, 2nd or 3rd backplane, from top to bottom).
The 520 Documentation implies that I only have to worry about the C/D/E
Jumper if I have multiple backplanes. But I tested it both ways: with a
Jumper on the C position, and no jumper at all. Still no luck. And it is
jumpered "low".
- FM -
Tim Clarke
"C,
> D
> > or E" position (i.e. 1st, 2nd or 3rd backplane, from top to bottom).
>
> The 520 Documentation implies that I only have to worry about the C/D/E
> Jumper if I have multiple backplanes. But I tested it both ways: with a
> Jumper on the C position, and no jumper at all. Still no luck. And it is
> jumpered "low".
Have you again tried the different hot-swap bay positions, in case you've a
bad slot. The worst thing would be if you have a bad tray, as that's pretty
hard to diagnose from scratch. You could try ignoring the Id. cable and
jumper the drive manually, in relation to the slot you're using (i.e. slots
1-6 = Id.s 0-5).
--
Cheers,
Tim
Tim Clarke
"C,
> D
> > or E" position (i.e. 1st, 2nd or 3rd backplane, from top to bottom).
P.P.S. is your SCSI cable going to the "outer" (i.e. nearest the opening
side) backplane connector?
--
Cheers,
Tim
Fred Mau
> Have you again tried the different hot-swap bay positions, in case you've
a
> bad slot. The worst thing would be if you have a bad tray, as that's
pretty
> hard to diagnose from scratch. You could try ignoring the Id. cable and
> jumper the drive manually, in relation to the slot you're using (i.e.
slots
> 1-6 = Id.s 0-5).
Been there, done that. I've got two type-2 fast/wide trays and a variety of
fast/wide drives, tried various combinations in various slots including
manual ID jumpers. I could believe a bad tray, but I'd have to believe that
BOTH of my type-2 trays suddenly went bad.
What it WILL see is a narrow drive in a type-1 tray anywhere on the
backplane, or a fast/wide drive on the J12 cable after the backplane (i.e.,
in the B bay).
Could I have somehow fried the backplane so that it will see a fast/wide
device passing through on the J12 port but not via a tray on the backplane
itself ??
- FM -
Fred Mau
> P.P.S. is your SCSI cable going to the "outer" (i.e. nearest the opening
> side) backplane connector?
Yes, the cable from the Mylex goes to the "outer" (J2) port. The "inner"
(J12) port has a cable with 2 fast/wide connectors and a terminator.
The Mylex will see a fast/wide device if I attach it to the J12 cable after
the backplane, so I presume the cabling and termination is correct.
- FM -
Tim Clarke
you've
> > a bad slot. The worst thing would be if you have a bad tray, as that's
> > pretty hard to diagnose from scratch.
> > You could try ignoring the Id. cable and
> > jumper the drive manually, in relation to the slot you're using (i.e.
> > slots 1-6 = Id.s 0-5).
>
> Been there, done that. I've got two type-2 fast/wide trays and a variety
of
> fast/wide drives, tried various combinations in various slots including
> manual ID jumpers. I could believe a bad tray, but I'd have to believe
that
> BOTH of my type-2 trays suddenly went bad.
>
> What it WILL see is a narrow drive in a type-1 tray anywhere on the
> backplane, or a fast/wide drive on the J12 cable after the backplane
(i.e.,
> in the B bay).
That's a novel approach, using a Type-1 (9595A) tray.
> Could I have somehow fried the backplane so that it will see a fast/wide
> device passing through on the J12 port but not via a tray on the backplane
> itself ??
It sounds like the backplane may be setting the High Bit (8+Id. from
tray/drive), even though the backplane is jumpered "Low". Did/Does the
Adaptec show only Id.s 8-13/D when cabled to the backplane?
--
Cheers,
Tim
Tim Clarke
> > side) backplane connector?
>
>
> Yes, the cable from the Mylex goes to the "outer" (J2) port. The "inner"
> (J12) port has a cable with 2 fast/wide connectors and a terminator.
>
> The Mylex will see a fast/wide device if I attach it to the J12 cable
after
> the backplane, so I presume the cabling and termination is correct.
Yep, that sounds fine, the passthrough cable has a captive active wide
terminator in the end connector and wrapped for secure location. Just
checking some of the things I've done wrong in the past.
--
Cheers,
Tim
Fred Mau
> > What it WILL see is a narrow drive in a type-1 tray anywhere on the
> > backplane, or a fast/wide drive on the J12 cable after the backplane
> (i.e.,
> > in the B bay).
>
> That's a novel approach, using a Type-1 (9595A) tray.
Well, I'm GUESSING that this other tray I've been testing is a "Type-1" only
because I know it's not a type-2 or type-3. Looks similar to a type-2,
except no locking lever or LED at the top. Also no SCSI ID cable, you have
to manually jumper the drive.
The tray came attached to a surplus IBM DFHS-S2F that I bought a while back.
It does work in a 520, but the tray fits very loosely, obviously not the
correct tray for this machine but it does work.
- FM -