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Old 8th September, 2005, 09:45 PM
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Seagate SCSI Disk Drives

I managed to get my grubby hands on 8 seagate SCSI hard disks, and am currently building a little server an want to use the disks in there but have no idea what i need to get them all working together.

I have 8

Seagate Barracuda ST39173LC
9.1 GB
7200RPM
SCSI Ultra 2

what do i need
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Old 8th September, 2005, 10:08 PM
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a scsi raid controller, perhaps? PCI slot card?
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Old 8th September, 2005, 10:12 PM
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Depends on what you want to do. I would build them into a RAID array, but you may not want to do that. In any case, at a bare minimum, you will need a SCSI Host Bus Adapter or SCSI RAID Controller (depending on whether you just want a bunch of independent drives or a real RAID). The Adaptec 2940-U2 SCSI HBA is a nice adapter for just general SCSI stuff and can be found for something like $15 or $20 on e-bay. If you want to do raid, then the AMI MegaRAID 1400 and 1500 controllers are very nice and can be had in the $50-$75 range. I have had very bad experience with the Adaptect RAID controllers (the AAA-131, for example) so I don't recommend them.
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Old 8th September, 2005, 10:23 PM
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Yeah ive found a few AMI SCSI controllers on ebay at the moment

how about this?

http://cgi.ebay.co.uk/MegaRAID-Expre...QQcmdZViewItem

how do you go about powering the drives as there appears to be no power connections.
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Old 8th September, 2005, 10:30 PM
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The Express 500 is a good controller, although it is only single-channel. However, if you can get it for at or near that price, it wouldn't be a bad deal.
The drives are SCA or 'SCSI Configured Automagically'. They have a single 80-pin connector on the back that carries both power and signal. This was designed both for ease of addressing the drives, ease of managing the drives, and hot-swap capability. Unfortunately, SCSI controllers still use the 68 pin connector, so you will have to buy 68-pin to 80-pin adapters for the drives. You will also need to buy a SCSI cable. If you go with a single-channel controller, then you will need a cable with enough connectors for all of the drives, the controller, and a terminator (which you will also need to purchase). So, if you want to run 8 drives, you'll need a 10-headed cable. If you get a dual channel controller, then you will need two 6-headed cables (4 drives, controller, and terminator on each cable).
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Old 8th September, 2005, 10:35 PM
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wow these thing are complicated. i also found this

http://cgi.ebay.co.uk/I-WILL-ULTRA-2...QQcmdZViewItem
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Old 8th September, 2005, 10:44 PM
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I don't know anything about the Iwill SCSI adapters. However, I doubt that it is a RAID controller, based on what I can see in the picture.
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Old 8th September, 2005, 10:45 PM
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BTW, just because you don't buy a RAID controller doesn't mean you can't have a RAID; you can buy a regular SCSI Host Bus Adapter and still do software RAID under Windows, if you really want to. You'll take a CPU hit, though.
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Old 8th September, 2005, 10:51 PM
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Like you said i think ill just find an american megatrends raid controller.

so i need if i go for the express 500 single channel raid controller ill need.

8 x drives
8 x 80 - 68 pin adapters
1 x 10 header 68 way SCSI cable
1 x terminator
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Old 8th September, 2005, 11:05 PM
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Yup.

This is what you will need for an SCA adapter. As it happens, I have dealt with the U.S. Branch of this outfit, and they seem to be on the up-and-up, although it is always a case of 'buyer beware'. They also have a 10 headed SCSI cable here and SCSI terminators here.
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Old 8th September, 2005, 11:11 PM
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Great stuff. Thanks very much gizmo.
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Old 8th September, 2005, 11:22 PM
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Be prepared for sticker shock, the ten connector SCSI cable is going to be very expensive. Don't buy a cheap SCSI ribbon cable!
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Old 9th September, 2005, 12:20 AM
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Yeah i suppose, i saved a packet on the hard disks (infact they were being throw away by the laboratory i work at, trash from the programmming section) so ill bare that in mind, thanks cloasters.

Im currently building a budget server from a dual p3 ECS motherboard and 2 1GHz P3 processors, hopefully about 1GB of ram and obviously between 4-8 of the seagate barracuda hard discs in some sort of raid array, not sure which yet but i like the idea of a 5 disc raid 3 array at the moment but im not sure weather the card im looking at can do it.
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Old 9th September, 2005, 12:44 AM
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Well been reading up on the Express 500, and its seems to meet my needs. Seems a 4 disc Raid 0 stripe very easily! looks like for cost purposes im gonna go for 4 disks at the moment.
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Old 9th September, 2005, 05:06 PM
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Eight SCSI HDD's for no cash at all, what a score! Sure, they are small but they'll make a wicked array.
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Old 9th September, 2005, 05:12 PM
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Man, if I got my hands on that many drives I couldn't let any go to waste. I guess that's just me. The idea of an 8 disc RAID array is just too cool.
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Old 9th September, 2005, 05:29 PM
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That's why I have mine. When I scored the drives in my array, they cost me $20 each, delivered
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Old 9th September, 2005, 06:41 PM
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Eight discs...free, i did have the embarrassment of sifting though the Programming departments shed (the shed being the place where they store stuff thats gonna be thrown away, usually though redundancy)

A few work collegues laughed at me but look whos laughing now!

Hey scored a Super tower case (practically brand new and is huge), a plextor plexwriter CD-R and a copy of Windows NT...again for free from the bin!
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Old 10th September, 2005, 06:20 PM
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Quote:
Originally Posted by gizmo
That's why I have mine. When I scored the drives in my array, they cost me $20 each, delivered
Some people... Naah, be less envious cloasters. Ya did good Gizmo!
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Old 10th September, 2005, 10:38 PM
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So, would 8 SCSI drives in some sort of outrageous RAID array destroy two Maxtor 10's in a RAID 0 array? Reason I ask is because it's around the same price I think. The SCSI costing maybe $50 more by the looks of it.
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