2011-01-20, 00:41
also, tell me if im right,
that Foxconn mother http://fwd4.me/u7k
has 4 sata ports, so i can plug 4 sata drives correct?
that Foxconn mother http://fwd4.me/u7k
has 4 sata ports, so i can plug 4 sata drives correct?
eskro Wrote:SUPER LOW COST 4TB
maxinc Wrote:Never use PCI SATA controllers. PCI has limited bus speed and will make your system dead slow once you connect enough drives. Get something with at least one PCI-E 4x slot which can accommodate an additional 8 SATA ports. PCI-E 1x controllers would only give you 2 extra ports.
poofyhairguy Wrote:I say AMD. My NASes are Intel, but that is only because they are built out of leftover hackintosh parts.
bmcclure937 Wrote:Is this 100% true? There are some good PCI SATA controllers available... such as the Promise TX4. I would look to see what is compatible with your NAS system as well... some OSes can be picky about hardware.
At any rate. I think the Promise TX4s are nice and can offer a good 4-port SATA controller on PCI. Using it for ZFS seems to be successful for many people. Plus, you can grab them cheap on eBay.
I understand that basically makes the PCI your bottleneck... but at 113MB/s (or whatever you stated was the theoretical max) you should be fine. GigE maxes out around the same speed. So if you would get a super-fast PCI controller then your speed will be limited by network anyhow (unless we are talking internal transfer speed and access, which is usually not a big deal in a dedicated NAS). Any other thoughts?!
eskro Wrote:so i can understand better,
when looking for a NAS CASE, i need?
External 5.25" Drive Bays 9
External 3.5" Drive Bays 1 (Exposed; converted from one 5.25 inch drive bay)
Internal 3.5" Drive Bays 4 (Hidden; from one 4-in-3 Device Module included)
Expansion Slots 7
??
eskro Wrote:like what about this one
COOLER MASTER Elite 310 RC-310-BKR2-GP Black with blue front panel Steel Body / ABS plastic front bezel ATX Mid Tower Computer Case 420W Power Supply
maxinc Wrote:PCI controller is fine as long as there is only one drive reading or writing on the PCI bus. During parity check for example, when all 4 drives are reading data simultaneously, their combined bandwidth can not exceed 133MB/s which results in an effective theoretical read speed of 133 / 4 = 33.4MB/s which is more like 22-24MB/s in real life. Combine that with a 2TB drive and you may have to wait a long time for a routine parity check. It gets even worse if you have 2 of these installed on the system.