Hi,
I'm looking at putting together a low power NAS that would run 24/7. I also want some redundancy so am looking to either include a controller that does RAID 10 (1+0 not 0+1) or use software RAID in linux. I intend to set up 6 drives of about 750GB to give me 2.25TB total (probably WD caviar green). This will also have a 1 in 5 chance of second drive failure causing data loss. The NAS would be for storage of data for home use i.e. videos, photos, docs etc that can be connected to while I'm at home.
In addition I then want a system that would be used as a home theatre PC. As this would be a more power hungry system, my first thought is to keep them separate.
I've been checking out the integrated Atom mini-ITX boards (N230 with passive cooling); however, in order to connect 6 drives, a third party controller would need at least a PCIe port, which is missing on a lot of these.
While I like the idea of the small form factor and ability to use a small case, I'm not sure if I'd actually be getting the lowest power setup, particularly as it would be at idle about 95% of the time.
Would a standard ATX/mATX board with integrated graphics be able to achieve similar power ratings? Are there any that can be passively cooled (without water cooling mods) to be silent? There are some boards that have 6 internal SATA ports, but that leaves none spare for a DVD drive or a boot drive, so the 3rd party controller would be required here as well.
In order to connect the drives I've been thinking of using a controller with a silicon image chip such as SiI3124 or SiI3132 that support FIS based switching for SATA port multipliers.
I have heard that the Atom CPUs don't actually have much range in their power draw i.e. close to 25W whether idling or maxed. Is this the case (not sure if it's power or TDP)? If so, then would a combined system such as an Athlon II X3 405e on a board with a 785G chipset actually draw less power at idle and then have the grunt to do the home theatre work? This would mean using Windows 7 as the host operating system and sharing the drives through windows rather than a dedicated file server. Windows would have to run a software RAID I think (does it work?). In this setup, I'd install the OS on a separate SSD. I think this drive would need to be on the main Mobo controller and not connected to a 3rd party controller. So really I'd be needing 8 SATA ports - SSD for OS, 6x drives in RAID, and blu-ray. I couldn't find any current generation integrated controllers that support SATA port multipliers (the next gen SB810 and SB850 may support them), thus the need for a PCIe SATA controller.
Well, there's lots of questions here that I hope someone can help with. I seem to be going around in circles at the moment.
Cheers
I'm looking at putting together a low power NAS that would run 24/7. I also want some redundancy so am looking to either include a controller that does RAID 10 (1+0 not 0+1) or use software RAID in linux. I intend to set up 6 drives of about 750GB to give me 2.25TB total (probably WD caviar green). This will also have a 1 in 5 chance of second drive failure causing data loss. The NAS would be for storage of data for home use i.e. videos, photos, docs etc that can be connected to while I'm at home.
In addition I then want a system that would be used as a home theatre PC. As this would be a more power hungry system, my first thought is to keep them separate.
I've been checking out the integrated Atom mini-ITX boards (N230 with passive cooling); however, in order to connect 6 drives, a third party controller would need at least a PCIe port, which is missing on a lot of these.
While I like the idea of the small form factor and ability to use a small case, I'm not sure if I'd actually be getting the lowest power setup, particularly as it would be at idle about 95% of the time.
Would a standard ATX/mATX board with integrated graphics be able to achieve similar power ratings? Are there any that can be passively cooled (without water cooling mods) to be silent? There are some boards that have 6 internal SATA ports, but that leaves none spare for a DVD drive or a boot drive, so the 3rd party controller would be required here as well.
In order to connect the drives I've been thinking of using a controller with a silicon image chip such as SiI3124 or SiI3132 that support FIS based switching for SATA port multipliers.
I have heard that the Atom CPUs don't actually have much range in their power draw i.e. close to 25W whether idling or maxed. Is this the case (not sure if it's power or TDP)? If so, then would a combined system such as an Athlon II X3 405e on a board with a 785G chipset actually draw less power at idle and then have the grunt to do the home theatre work? This would mean using Windows 7 as the host operating system and sharing the drives through windows rather than a dedicated file server. Windows would have to run a software RAID I think (does it work?). In this setup, I'd install the OS on a separate SSD. I think this drive would need to be on the main Mobo controller and not connected to a 3rd party controller. So really I'd be needing 8 SATA ports - SSD for OS, 6x drives in RAID, and blu-ray. I couldn't find any current generation integrated controllers that support SATA port multipliers (the next gen SB810 and SB850 may support them), thus the need for a PCIe SATA controller.
Well, there's lots of questions here that I hope someone can help with. I seem to be going around in circles at the moment.
Cheers