Don't get on your own nerves and time and flash!
You do the flashing, only for the purpose, that you can use a Windows-PCI-Card
as a Card from which you can boot/start into the
Operation
System. You do not need this for just transfering files.
You have an IDE-Drive that is perfectly fine for the OS!
You can buy a cheap Windows Card with Sil 3124 Chip on it and just install the drivers to your Mac (no firmware, firmware gets on the card itself, drivers just sit on your hard drive and can be manually deleted everytime you like). the SIl-drivers are on the internet, if it does not come with a CD. Then you can connect SATA-drives. You will be able to access data from them, but you can not put your OS on it an boot/start from these drives, which you do not want, because you have your IDE drive.
Here is a list of Windows/"PC"-cards that work in Macs:
https://forums.macrumors.com/threads/1650568/ (scroll down)
transfer speeds:
ATA in MDD is ATA-100 which will give you about 40-60MB/s on an IDE drive.
ATA in older PowerMac G4s is ATA66, which gives you about 35MB/s.
SATA-PCI 32bit (with short gold edge and two cuts) gives you max. of 30-35MB/s
SATA-PCI with 64bit (longer golden edge with three cuts) gives you up to 62MB/s. (If you have 1 2TB drive and put one file at the beginning and one at the end of the drive, because the rest is full, this file will be transferred at about 30MB/s or even only 16MB/s.
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I posted the
power consumption, because that is what you will want to look into, when you have it running all day. The MDD Dual 1,25GHz consumes the most of all PowerMac G4s, and it is freaking loud as and you might not want to have that as a fileserver in your room, when you sleep next to it.
For
quietness and power consumption a ibook (or macmini) is still a very good idea! If you it must not be fast, but then on the other hand. The ibook's Firewire port gives you 35MB/s and the USB2 gives you 15-20MB/s, so you are close to the solutions above.
What other G4s are there and what are the differences, see post #12 (and read on)
https://forums.macrumors.com/threads/1215490/
Also you claimed, there were two MDD models, no there are more. See all PowerMac G4s that were available here:
http://www.everymac.com/systems/apple/powermac_g4/index-powermac-g4.html (expand the details for more infos)
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If you do not want to connect via ethernet cable to your wifi base station you can add a Wifi dongle, which will be slower. All G4s had USB1 (max. of arround 10MB/s).
You can add any PC-Card with USB2 that has a NEC chip on it (the black squares on the green, red, yellow or blue plastic board. It will say "NEC" or "VIA" or something different) and then put a wifi dongle in it.
But cable is preferred.
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Also the MDD and a few Quicksilver models don't have a hard drive limitation of 128GB on the IDE-connector on the board itself (every PCI card has no limit!). Small SATA drives are usually cheap, so you can buy an adapter from SATA to IDE and connect that to the second IDE connector. But SATA-Hard Drive plus adapter will end up the same price as an IDE drive some times. Well at least you can save heat with the smaller SATA dirves, which means less cooling needed, which means a more quiet PowerMac.
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Use a max of 2TB for every single Drive (connected to SATA-PCI) and for the IDE BUS I would not go above 1TB (actually even only 500GB to be save). 3TB drives work sometimes, but are peachy, you can loose your data.
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Drive Choice
I tested a lot of drives and Seagate drives have the most problems talking to the IDE BUS at least in a PowerMac G4 AGP and they work peachy on the IDE-Port of a IDE-PCI card) - they get header problems, which may end up in loosing the data. (If you use Seagate drives, move some data from one drive to another for 2-3 days and then open Disk utility and check the drive. I mean disk utility is not really good in finding things, but here it finds it.
I have one very fast (but hot Seagate IDE 160GB that works without issues in an external case, and a 320GB IDE that works without issue in an external case, but when I connect them internally I get errors on the drive's structure.
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just to be save keep away from green (WD) or LP (Seagate) drives, these are the ones with 5400rpm and 5900rpm, there are reports they have problems awaking from sleep (you have to restart your Mac everytime). For very new WD drives do not forget to adjust the Pins from SATA III to SATA II.
WD and Hitachi are the most compatible drives, if you look into the xlr8yourmac.com hard drive database with reviews. (I have a 3,5" Toshiba, too and am happy with it and I found LAptop Toshiba drives form the time of 2005 around are longliving, too).
BUT! actually you can not say that about a manufacturer in general. On the other hand there is the problem that all newer Seagate drives come with flash ability, becaus ethe firmware is so crappy, that Seagate decided to allow users to again and again update the latest firmware themselves and they even have a support forum for that. Also Seagate sold refurbished drives as completely new 10 years ago (that was found out by a german PC-newspaper. Seagate was so stupid they had not zeroed the SMART data that collected the running time.)
Then there is a french salesman who has kept record of the drives he sells and what he gets back as defective. Hitachi had a chance of 0,003% of crapping out per user, while WD, Samsung and Seagate were in the 0,001-0,0015% range. But this is still very few per user and Hitachis aeem to be the most Mac compatible drives after WDs drives, before advanced format and SATA-III started (according to xlr8yourmac). Google has a study too, but I can't find it now (they keep record of their server farms HDD failing rates).
Also where I live (Germany) Seagate is known as the hughest supplier for HDDs in discounter PCs (Aldi with its fake brand medion) and cheap harddrive cases, home-hdd-recorders, that needs a hard drive to be sold better.
If you want to save further costs and heat, you can also buy 2,5" instead of 3,5" drives (SAT have the same connector, while IDE 2,5" have another connector and you will need an adaptor to 3,5" IDE, costs 3-10EUR.
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You also do not need a fancy graphics card in a server, so stick with the one you have unless it has a fan. Then you can swap it for one that is passively cooled (no fan).
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I am sure there are things I have forgotten.
Btw. I tested the power consumption, this is why I say this.
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PS: SuperDuper is ok for bootable backups, too, do not know, if someone mentioned.
I also think it will not be very funny to watch bigger h.264 movies via ethernet from you PowerMac to your HD-TV. But I do not do this. I have a satellite receiver for 50,-EUR were I can connect an external USB Hard Drive and watch movies from, the CPU in that receiver is more capable for h.264-HD than a Mac CPU and it is not even an expensive one. (I can even copy DVDs to the dirve and it will play the movies of the DVD without altering them).
Also you will not have the server running all the time and consume Watts, just for Dirves that sit arround waiting til you want to watch movies.
If you want to save energy costs:
get yourself a couple of external drives.
One for bootable OS backups (If you want to have several backups sitting on the same disk you either need to partition it before use or make several folders). - and a second for movies, which you keep in your living room, e.g.. Maybe a third for music. Then you can power them up everytime you need something. (oh and a third for file backups, which are not the OS itself, like software you want to keep).
You may want to do the math of energy costs, but if you are a PowerPC-o-phile then the hobby is maybe more value than your electricity bill.
