Dan,
Thanks for the tips. Yes, I think I am stuck with the PCI bus - here are the
specs on the Dell GX20 small mini tower:
*Expansion Bus*
Bus types
PCI 2.2, AGP 2.0, and USB 2.0
Bus speed
PCI: 33 MHz
AGP: 66 MHz
Small form-factor computer
expansion-card connector
one PCI slot and one AGP slot; low-profile cards are supported (card size =
6.35 cm [2.5 inches] high by 16.76 cm [6.6 inches] long)
Small desktop computer
expansion-card connectors:
two PCI slots and one AGP slot; half-length cards are supported (card size =
10.67 cm [4.2 inches] high by 17.65 cm [6.95 inches] long)
Small mini-tower computer
expansion-card connectors:
four PCI slots and one AGP slot (card sizes = three PCI slots support cards
up to 27.9 cm [11 inches] long, and one PCI slot and the AGP slot support
cards up to 22.9 cm [9 inches] long)
PCI expansion-card connector size
120 pins
PCI expansion-card connector data width (maximum)
32 bits
AGP expansion-card connectors
one
AGP expansion-card connector data width (maximum)
32 bits
AGP expansion-card connector size
172 pins
AGP bus protocols
4x modes at 1.5 V
Memory module connector size
DDR — 184 pins; SDRAM — 168 pins
Can I use the AGP bus for the eSata controller??
Mark
On Thu, Sep 10, 2009 at 6:30 PM, dan <danden...@gmail.com> wrote:
>
>
> On Thu, Sep 10, 2009 at 4:20 PM, Mark Phillips <m...@phillipsmarketing.biz
> > wrote:
>
>> I am setting up an external backup drive for some Linux/Mac/Windows
>> computers on a small network plus two remote computers over the 'net. I have
>> a P4 running Debian, and I need to install a PCI2.2 compliant card with one
>> or two external Sata ports for one/two external Sata 2 drives in the 1TB+
>> range. I am looking for recommendations for:
>>
>> 1. a Linux compatible Sata 2 drive controller with external ports for 1 or
>> 2 drives
>> 2. external Sata 2 drives
>> 3. sources for purchasing these drives and card
>>
>> I have bought from Newegg.com in the past and have found they have pretty
>> good prices. I am always on the lookout for new places to shop!
>>
>> Thanks
>>
>
>
> I think you will have trouble finding a SATA2 PCI card that is not linux
> compatible. I have this one
> http://www.newegg.com/Product/Product.aspx?Item=N82E16815280005
> 2 SATA + 1 eSATA.
>
> for esata, I dont like anything out there for pre-built esata drives of
> good quality. I suggest the following combo
> http://www.newegg.com/Product/Product.aspx?Item=N82E16817173042
> and this drive:
> RAID Edition 1TB
> http://www.newegg.com/Product/Product.aspx?Item=N82E16822136313
> or this drive
> Black Edition 1TB
> http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284
>
> You can ebay a SATA to eSATA adapter or get one off meritline for like
> $5-$8 and that would give you 3 eSata ports.
>
> The raid edition drive is certified for non-stop use. both have a 5 year
> warranty. People have reported some modern drives to fall out of raid
> arrays and require re-syncs often. Western digital will replace a raid
> edition if this is an issue but not anything else. These are about the
> fastest drives you can get which is ideal for backuppc. The Samsung F1
> drives are also very fast (maybe faster) but have a shorter warranty of 3
> years.
>
> I run the raid edition WD in a server and have the black edition WD in my
> home workstation and am satisfied with both.
>
> I can tell you that you will have a bandwidth issue and here is the math.
>
> PCI = 32bitx33mhz = 132MByte/s maximum thoroughput. Because backuppc will
> be handling the data, you will use the bus twice during backups
> (PCI>CPU>PCI) but PCI is duplex so thats 132MB in and 132MB out. That must
> be shared amount all devices so anything that is recieving data like the
> hard disks will share that 132MB and so on.. Basically SATA 300 wont be of
> any use to you because you dont have the bandwidth. That should be ok but
> you wont get the full burst speed of the drive from cache.
>
> I am assuming that you are limited to PCI because of the P4 and you
> typically didnt find anything but a PEG slot which cant be used for anything
> except graphics card unless this is a very recent P4 system.
>
> I also recommend newegg.
>
>
>
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