Apple Network Server 500/132

Anyone know the 50 pin scsi model type drive they used in this server? Was it an apple brand (which I do not think) or what brand was it and perhaps the model number. I have an ANS 500 with no DAT drive and I want to fill the space with one.. Any assistance is greatly appreciated!!!!

Thanks everyone!!!

I'll check in a couple of days - I've a 500/200, I know it's an IBM branded drive (no Apple logo), 7200 RPM 4.3GB

Thanks Byrd!! I think I found out it’s a DDS-2 scsi DAT drive. But if you can find out the brand snd perhaps model # that would be great. If I get a replacement IBM if it is that I need to make sure I have the right jumpers to match. So if you happen to know the jumper configuration that would be awesome!

I'm sorry I didn't read your OP - thought it was the HD brand you were after - not sure if mine has a DAT drive I'll check tonight.

Sorry, I don't have the tape drive in mine or I'd let you know.

Hey gang.. Another question.. anyone know where the RAM is for this. I show in manuals that it is 168 pin 60ns parity 72 bit and in 16, 32, 56, 64MB sizes.. I have looked all over ebay and cannot find the right modules.. could someone assist me?? I basically want to max it out at 512MB so that would be (8) 64MB modules..

It can use non-parity, but apparently memory performance will be a little slower.

Finding parity 5V 168 pin buffered DIMMs is extremely unlikely.

I've never understood why it doesn't support 128MB DIMMs. It uses the same chip set as the PM9500/9600, although the DPATH controllers are different to support parity. It must be a lame ROM limitation. Like didn't write the last three lines of code to check for 128MB DIMMs at boot time.

Yes I agree about the parity bit (no pun intended) trag thank you. Any ideas of a search with the proper ones I could find on Ebay? I was given a little advice by Siliconinsider.. He said "Count the chips on the modules you find, if there are 4, 8, 16, 32, it's non parity 64bit. 72bit parity will have something that's not a power of 2, and there's a rare 80bit double parity option with even more chips as well that IBM used all the time in their RS/6000 RISC systems." I need DIMMS that are non-parity 168 pin 72-bit in 64MB if possible... But this has really confused me.. If trag you or someone can find a good deal on ebay for me I'd really appreciate it. I cannot seem to find the correct ones...

aplmak said:

Yes I agree about the parity bit (no pun intended) trag thank you. Any ideas of a search with the proper ones I could find on Ebay? I was given a little advice by Siliconinsider.. He said "Count the chips on the modules you find, if there are 4, 8, 16, 32, it's non parity 64bit. 72bit parity will have something that's not a power of 2, and there's a rare 80bit double parity option with even more chips as well that IBM used all the time in their RS/6000 RISC systems." I need DIMMS that are non-parity 168 pin 72-bit in 64MB if possible... But this has really confused me.. If trag you or someone can find a good deal on ebay for me I'd really appreciate it. I cannot seem to find the correct ones...

Click to expand...

These MAY work:


I’ve bought those from that seller for my 8600.

Thanks both Trag & MrFahrenheit! At least it's something to start with.. it appears it must be 5V not 3.3 and researching 64 bit non-parity is ok... the parity is the 72 bit? Yes or No? I am by far not a memory expert..

64 bit for non-parity. Parity adds one bit per byte. There are 8 bits in a byte. So when you add parity to 64 bits, it adds 8 more bits, or 64 + 8 = 72 bits with parity.

You might check Memory Master's Ebay store or their website. I thought I found a place where they sell two 64MB 5V DIMMs together for a little lower unit price than buying them one at time.

Here's a quick note with the module bus width. Provision for double parity exist in the JEDEC standard and is mostly used by IBM, they are rare but they do exist. Any modules that will have a different number than 2, 4, 8 16, 32 memory chips on them will have a good chance to have parity.



Other variations:
- Fast Page Mode (FPM) or Extended Data Out (EDO), modes to read entire consecutive memory pages without refreshing the address for faster access. EDO is capable of FPM so EDO RAM will work in FPM only systems, but system that specifically make use of EDO will need EDO.
- Voltage, 5V or 3.3V, these are not interchangeable, and the module is keyed to prevent insertion.
- Buffered/registered, the address bus goes through a buffer which is usually seen as 1-2 smaller chips in the middle of DIMMs. These help to share the load as in systems with a lot of memory slots and DRAM chips on the modules, all the address lines for each chips are in parallel. This is transparent to the system but it is preferable.

Last, DIMM modules are keyed. The position of the notch will be centred, or offset to the left or right. you can identify them using this way.
The left key is for the buffered/unbuffered identification, the middle key is for the operating voltage. The right key does not exist on DRAM modules.

Wow finding this RAM is REALLY a challenge! Of course Apple had to use really oddball RAM on the Apple Network Server 500/700

Actually it's the opposite of oddball because it's a JEDEC standard. 5V DIMM were relatively short lived, not widespread in PCs, and quickly eclipsed by SDRAM, so today they are not common, especially the server variety with parity.

Can confirm I'm using bog standard 5V DIMMS from Macs of the era in my ANS, 512MB with no issues.

Again, sorry I've not had the time to wheel out my ANS yet to confirm all the stuff I've been saying.

Byrd no problem!! I appreciate your help. I'm just waiting on a new logic board for my ANS... when I bought it they had left the battery in and you know what happened... But I've got her all cleaned up. All the rust gone! Just waiting on the board and an HP C1533 DDS-2 DAT drive. I have to say I used this Rustoleum Rust Remover stuff and it is simply magical!!! I took a plate and put one of the rusted fan cages in it after using brillo and then I used a toothbrush with the gel and it looks like new!!! Anyways here is a pic of my new baby.. Out of curiosity it came with the Network Server kit and all the CD's and two security dongles... any idea what those are for??? I won't know what's on the HDD till I get it booted.

One of these ANS threads reminded me that I needed to pull the battery from mine. So just reporting I pulled it and it hadn't started leaking yet. Whew -- wipes forhead. I hadn't touched the thing in years. I've pulled all my other batteries, including stored logic boards, but forgot about the ANS. I guess because it isn't a Mac.

The Rustoleum stuff is basically phosphoric acid. The same stuff found in Coca Cola at a .4% (.04%?) concentration. Which is why urban legendary says you can clean battery terminals with Coke. Over the years, it's been marketed by different companies.

The chemistry is something like replacing the iron oxide with iron-phosphate (?? some Iron + phosphorous compound) which is more tightly bound than iron oxide. So the iron won't spontaneously rust again. Also, the iron-phosphorous compound takes paint really well, and even unpainted it a reasonably attractive flat black color.

I bought a one quart bottle of thin (water-like viscosity) green liquid at a local auto parts store 35 years ago. That last me about 20 years. Now I can only find the Rustoleum marketed version, which if fine.

trag said:

I bought a one quart bottle of thin (water-like viscosity) green liquid at a local auto parts store 35 years ago. That last me about 20 years. Now I can only find the Rustoleum marketed version, which if fine.

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If it's the same, that one is called Ospho or something similar. I've used it on my old pickup. Can be found at NAPA and a lot of larger hardware stores in the paint section.

trag said:

One of these ANS threads reminded me that I needed to pull the battery from mine. So just reporting I pulled it and it hadn't started leaking yet. Whew -- wipes forhead. I hadn't touched the thing in years. I've pulled all my other batteries, including stored logic boards, but forgot about the ANS. I guess because it isn't a Mac.

The Rustoleum stuff is basically phosphoric acid. The same stuff found in Coca Cola at a .4% (.04%?) concentration. Which is why urban legendary says you can clean battery terminals with Coke. Over the years, it's been marketed by different companies.

The chemistry is something like replacing the iron oxide with iron-phosphate (?? some Iron + phosphorous compound) which is more tightly bound than iron oxide. So the iron won't spontaneously rust again. Also, the iron-phosphorous compound takes paint really well, and even unpainted it a reasonably attractive flat black color.

I bought a one quart bottle of thin (water-like viscosity) green liquid at a local auto parts store 35 years ago. That last me about 20 years. Now I can only find the Rustoleum marketed version, which if fine.

Click to expand...

Trag Im sure glad you pulled that battery! Anyone else who reads this thread should do so immediately! What was strange is that it wasn’t a red Maxell battery.. it was the white one with green stripes! I am glad you did that! Whew!!

aplmak said:

Trag Im sure glad you pulled that battery! Anyone else who reads this thread should do so immediately! What was strange is that it wasn’t a red Maxell battery.. it was the white one with green stripes! I am glad you did that! Whew!!

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@trag - I bet that was my thread that prompted you to remove the battery. Mine was a Maxell, and it took out both the logic board and the RAID card. I was able to locate a replacement logic board (from Europe!) and was also able to find a nearly identical Mylex RAID card and put the socketed Apple ROM from the ruined one on and get back to functional.

It was a semi-expensive lesson but I'm happy to say my Network Server completely recovered