I run FlexRAID which requires a lot of drives but one parity drive.
My specs will be:
i5-3570K @ 4ghz on default volts
2 x DDR3 8Gb
Intel IGP
120Gb Sandisk SSD
18 x 3Tb WD30EZRS drives (WD Greens)
DVD-RW drive
2 x LSI SAS Controllers (PCIEx8)
1 x 120mm fan (CPU)
4 x 140mm fans (airflow)
The PSU calc here recommends
Minimum PSU Wattage: 389 W
Recommended : 439 W
I have a Silverstone Strider Gold SST-ST55F-G 550W PSU which current powers 11 HDDs in similar spec system.
Storage Review says that the HDDs require 2W at 5V and 10W at 12V so that is a current draw per HDD of 0.4A @ 5V and 0.83A @ 12V. All the HDDs would total 7.2A @ 5V and 15A @ 12V. That is well within specs.
** No hotlinking **
http://www.storagereview.com/images/low_power_power_values(4).png
The next issue might be cabling. 18AWG cable can take 6-7A
That means 5 HDDs per cable. The Silverstone only has 3 outputs that are live (4th is capped off on the 550w model)
That means it probably cannot run more than 15 HDDs.
So, PSU recommendations? I think I need FOUR modular outputs for the HDDs/DVD/SSD (5 SATA on each, will make up cables). I think around 500W but will take opinions. I guess if I went to 650W I could chuck in my GTX970 (TDP 145W and nearly all 12V). Needs to be GOLD and semi modular. I prefer the shorter PSUs as the longer ones make it harder to fit cabling.
My specs will be:
i5-3570K @ 4ghz on default volts
2 x DDR3 8Gb
Intel IGP
120Gb Sandisk SSD
18 x 3Tb WD30EZRS drives (WD Greens)
DVD-RW drive
2 x LSI SAS Controllers (PCIEx8)
1 x 120mm fan (CPU)
4 x 140mm fans (airflow)
The PSU calc here recommends
Minimum PSU Wattage: 389 W
Recommended : 439 W
I have a Silverstone Strider Gold SST-ST55F-G 550W PSU which current powers 11 HDDs in similar spec system.
Storage Review says that the HDDs require 2W at 5V and 10W at 12V so that is a current draw per HDD of 0.4A @ 5V and 0.83A @ 12V. All the HDDs would total 7.2A @ 5V and 15A @ 12V. That is well within specs.
** No hotlinking **
http://www.storagereview.com/images/low_power_power_values(4).png
The next issue might be cabling. 18AWG cable can take 6-7A
That means 5 HDDs per cable. The Silverstone only has 3 outputs that are live (4th is capped off on the 550w model)
That means it probably cannot run more than 15 HDDs.
So, PSU recommendations? I think I need FOUR modular outputs for the HDDs/DVD/SSD (5 SATA on each, will make up cables). I think around 500W but will take opinions. I guess if I went to 650W I could chuck in my GTX970 (TDP 145W and nearly all 12V). Needs to be GOLD and semi modular. I prefer the shorter PSUs as the longer ones make it harder to fit cabling.