All prices in this section are current as of June 16, 2012 unless otherwise noted.

20 Drive Budget Build (rackmount)
Mobo: ECS A885GM-A2 (V1.1)
CPU: AMD Sempron 145
RAM: Crucial 2GB DDR3 1333 (feel free to upgrade, pretty much any DDR3 1066 or 1333 RAM should work)
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Norco 4220
SATA Expansion Cards: Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2

• IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)

Cables:

• NORCO C-SFF8087-4S Discrete to SFF-8087 (Reverse breakout) Cable x 1
• 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable x 4
• No SATA cables needed

Fanplate: Norco 120mm fanplate *optional
Fans: (replacing the stock fans is optional, but recommended if quiet performance is desired)

• Nexus PWM Series D12SL-12PWM 120mm Case Fan x 3 *optional
• ARCTIC COOLING ACF8 Pro PWM 80mm Case Fan x 2 *optional

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $830 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 38 TB
Expandability: None.

20 Drive Budget Build (tower)
Mobo: ECS A885GM-A2 (V1.1)
CPU: AMD Sempron 145
RAM: Crucial 2GB DDR3 1333 (feel free to upgrade, pretty much any DDR3 1066 or 1333 RAM should work)
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Antec 1200
Hot Swap Drive Bays: Norco SS-500 x 4 (Two alternatives are listed below. Both have their pros and cons. You can read my review of all three cages here.)

• Icy Dock MB455SPF-B x 4 (replacement option 1)
• Supermicro CSE-M35T-1B x 4 (replacement option 2)

Fans:

• Coolink SWiF2-801 80mm x 4 *optional (Norco SS-500/Icy Dock MB455SPF-B fan upgrade if quieter performance is desired)
• GELID Solutions FN-PX09-20 92mm x 4 *optional (Supermicro CSE-M35T-1B fan upgrade if quieter performance is desired)

SATA Expansion Cards: Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2
Cables:

• 0.5m 30AWG Internal Mini SAS 36pin (SFF-8087) Male w/ Latch to SATA 7pin Female (x4) Forward Breakout Cable x 4
• Locking SATA (Black) x 2 (2 included with motherboard, also available in Blue, Red, UV Blue, and UV Green)

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $985 (without the optional fans) + shipping + cost of hard drives
Capacity: 38 TB
Expandability: None.

20 Drive Beast (rackmount)
Mobo: Supermicro X9SCM-F-O
CPU: Intel Pentium G620 (feel free to upgrade to Intel i3 2100 or other Intel i3 2100 series CPUs)
RAM: Kingston 8GB DDR3 1333 (8GB of RAM may be overkill, but I can’t find any compatible 4GB kits!)
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Norco 4220
SATA Expansion Cards: Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2

• IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)

Cables:

• NORCO C-SFF8087-4S Discrete to SFF-8087 (Reverse breakout) Cable x 1
• 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable x 4
• No SATA cables required

Fanplate: Norco 120mm fanplate *optional
Fans: (replacing the stock fans is optional, but recommended if quiet performance is desired)

• Nexus PWM Series D12SL-12PWM 120mm Case Fan x 3 *optional
• ARCTIC COOLING ACF8 Pro PWM 80mm Case Fan x 2 *optional

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $1005 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 38 TB
Expandability: None.

20 Drive Beast (tower)
Mobo: Supermicro X9SCM-F-O
CPU: Intel Pentium G620 (feel free to upgrade to Intel i3 2100 or other Intel i3 2100 series CPUs)
RAM: Kingston 8GB DDR3 1333 (8GB of RAM may be overkill, but I can’t find any compatible 4GB kits!)
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Antec 1200
Hot Swap Drive Bays: Norco SS-500 x 4 (Two alternatives are listed below. Both have their pros and cons. You can read my review of all three cages here.)

• Icy Dock MB455SPF-B x 4 (replacement option 1)
• Supermicro CSE-M35T-1B x 4 (replacement option 2)

Fans:

• Coolink SWiF2-801 80mm x 4 *optional (Norco SS-500/Icy Dock MB455SPF-B fan upgrade if quieter performance is desired)
• GELID Solutions FN-PX09-20 92mm x 4 *optional (Supermicro CSE-M35T-1B fan upgrade if quieter performance is desired)

SATA Expansion Cards: Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2

• IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)

Cables:

• 0.5m 30AWG Internal Mini SAS 36pin (SFF-8087) Male w/ Latch to SATA 7pin Female (x4) Forward Breakout Cable x 4
• No SATA Cables required (6 included with motherboard)

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $1180 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 38 TB
Expandability: None.

22 Drive Budget Build (rackmount)
Mobo: ECS A885GM-A2 (V1.1)
CPU: AMD Sempron 145
RAM: Crucial 2GB DDR3 1333 (feel free to upgrade, pretty much any DDR3 1066 or 1333 RAM should work) 
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Norco 4224
SATA Expansion Cards:

• Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2
  • IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)
• SATA2 Serial ATA II PCI-Express RAID Controller Card (Silicon Image SIL3132) x 1

Cables:

• NORCO C-SFF8087-4S Discrete to SFF-8087 (Reverse breakout) Cable x 2
• 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable x 4
• No SATA Cables required

Fanplate: Norco 120mm fanplate *optional
Fans: (replacing the stock fans is optional, but recommended if quiet performance is desired)

• Nexus PWM Series D12SL-12PWM 120mm Case Fan x 3 *optional
• ARCTIC COOLING ACF8 Pro PWM 80mm Case Fan x 2 *optional

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $875 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 40 TB + optional 2 TB cache
Expandability: None.

22 Drive Beast (rackmount)
Mobo: Supermicro X9SCM-F-O
CPU: Intel Pentium G620 (feel free to upgrade to Intel i3 2100 or other Intel i3 2100 series CPUs)
RAM: Kingston 8GB DDR3 1333 (8GB of RAM may be overkill, but I can’t find any compatible 4GB kits!)
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Norco 4224
SATA Expansion Cards: Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2

• IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)

Cables:

• NORCO C-SFF8087-4S Discrete to SFF-8087 (Reverse breakout) Cable x 2
• 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable x 4
• No SATA Cables required

Fanplate: Norco 120mm fanplate *optional
Fans: (replacing the stock fans is optional, but recommended if quiet performance is desired)

• Nexus PWM Series D12SL-12PWM 120mm Case Fan x 3 *optional
• ARCTIC COOLING ACF8 Pro PWM 80mm Case Fan x 2 *optional

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $1090 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 40 TB + optional 2 TB cache
Expandability: None.

24 Drive Budget Build (rackmount)
unRAID currently supports a maximum of 22 drives, but you can add more drives outside the parity protected array via unMenu or SNAP
Mobo: ECS A885GM-A2 (V1.1)
CPU: AMD Sempron 145
RAM: Crucial 2GB DDR3 1333 (feel free to upgrade, pretty much any DDR3 1066 or 1333 RAM should work) 
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Norco 4224
SATA Expansion Cards:

• Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2
  • IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)
•  SATA2 Serial ATA II PCI-Express RAID Controller Card (Silicon Image SIL3132) x 2

Cables:

• NORCO C-SFF8087-4S Discrete to SFF-8087 (Reverse breakout) Cable x 2
• 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable x 4
• No SATA Cables required

Fanplate: Norco 120mm fanplate *optional
Fans: (replacing the stock fans is optional, but recommended if quiet performance is desired)

• Nexus PWM Series D12SL-12PWM 120mm Case Fan x 3 *optional
• ARCTIC COOLING ACF8 Pro PWM 80mm Case Fan x 2 *optional

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $900 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 40 TB + optional 2 TB cache + optional 4 TB extra space via SNAP
Expandability: None.

24 Drive Beast (rackmount)
unRAID currently supports a maximum of 22 drives, but you can add more drives outside the parity protected array via unMenu or SNAP
Mobo: Supermicro X9SCM-F-O
CPU: Intel Pentium G620 (feel free to upgrade to Intel i3 2100 or other Intel i3 2100 series CPUs)
RAM: Kingston 8GB DDR3 1333 (8GB of RAM may be overkill, but I can’t find any compatible 4GB kits!)
PSU: CORSAIR Enthusiast Series TX650 V2 650W
Case: Norco 4224
SATA Expansion Cards:

• Supermicro AOC-SASLP-MV8 8-Port SAS/SATA Add-on Card x 2
  • IBM ServerRAID M1015 x 2 – Replacement Option (As the Supermicro cards are difficult to obtain outside of the US, unRAID forum user seanant is currently selling these M1015 cards internationally. They are reported to work well with unRAID, though I personally have not used them.)
• SATA2 Serial ATA II PCI-Express RAID Controller Card (Silicon Image SIL3132) x 1

Cables:

• NORCO C-SFF8087-4S Discrete to SFF-8087 (Reverse breakout) Cable x 2
• 1m 30AWG Internal Mini SAS 36pin (SFF-8087) Male to Mini SAS 36pin (SFF-8087) Male Cable x 4
• No SATA Cables required

Fanplate: Norco 120mm fanplate *optional
Fans: (replacing the stock fans is optional, but recommended if quiet performance is desired)

• Nexus PWM Series D12SL-12PWM 120mm Case Fan x 3 *optional
• ARCTIC COOLING ACF8 Pro PWM 80mm Case Fan x 2 *optional

Hard Drives: Green drives (5400 rpm or 5900 rpm), such as WD Green, Hitachi CoolSpin, Samsung EcoGreen, and Seagate LP
Cost: $1075 (without the optional fans/fanplate) + shipping + cost of hard drives
Capacity: 40 TB + optional 2 TB cache + optional 4 TB extra space via SNAP
Expandability: None.

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