Proper Power Supply Sizing Guidance

[moodx]

I'm posting my numbers below and would appreciate any feedback, I'm considering most loaded configuration

Hardware	QTY	Potential (W)	Idle (W)	Total Potential (W)	Total Idle (W)
Gigabyte C246M-WU4	1​	25​	25​	25​	25​
Intel i3-8100	1​	88​	32​	88​	32​
WD Red Plus 8TB (WD80EFZZ)	8​	35​	4.1​	280​	32.8​
Fractal Design Dynamic X2 GP-14	8​	2.4​	1.32​	19.2​	10.56​
Intel E97379-001	1​	9.9​	1.68​	9.9​	1.68​
Patriot P300 M.2 128GB	2​	2.07​	0.37​	4.14​	0.74​
Samsung 16GB ECC (M391A2K43BB1-CTD)	2​	6​	6​	12​	12​
				438.24​	114.78​

Target size: ~547.8W
Target size*0.2: 110W>114(Total Idle)

I'm thinking of Seasonic Focus PX-650 (Found it around $180)

 

[jgreco]

Not seeing anything alarming there.

 

[Constantin]

What I like about Seasonic is that they explicitly call out the Watts/Amps per rail and the prime series appears to set aside about 100-125W for motherboard-related voltage rails and the rest goes to 12VDC. So these PSUs seem to be pretty optimal for NAS' with HDDs - lots of 12VDC use by the drive motors.

Sadly, the Seasonic Prime SSR-650TD I bought in 2017 appears to be failing. I've started the RMA process (12 year warranty). Since Seasonic does not offer a advance-exchange program (like iXsystems!), I bought another Prime Titanium unit, this time w/a 750W capacity.

My line power plug load was about 126W max. and it appears impossible to find a ATX-form factor, Ti-certified PSU under 600W. Curiously, some of those 600W Ti-certified units sell for far more than higher-capacity, also Ti-certified, units from the same OEM, in the same marketplaces.

Yet, using a Ti-certified PSU seems advisable in areas like mine with 0.25$+/kWh electricity prices since the kinds of loads my NAS imposes squarely falls in the 15-20% capacity range that Ti-certified PSUs have to show a 90-92% conversion efficiency for.

Edit: Seasonic DOES offer an advance-exchange program. For $75 via PayPal they will send you a replacement and give you 60 days to send in the defective unit. My bad!

 

[Ericloewe]

Seasonic's good, but what keep me buying from them specifically is that their cables have been compatible for some ten years now. It's just so convenient to be able to quickly swap out a PSU without replacing all the cables, along with the single pool of cables for all PSUs...

 

[twf85]

During a scrub recently, I had enough drives become "UNAVAILABLE" that my system went down. Panic ensued, of course, as something like that had never happened before.

I usually have issues with scrubs, but never this many disks. Usually just one, in fact. The backplanes in my NAS are somewhat infamous for having issues, something I did not learn until after building the system.

For what it's worth, in the ~4 years that I have had this system operational, I've only had one disk actually die so far.

Anyway, I ran long tests on all the drives, and they all passed:

Show : Results of long tests

=== START OF INFORMATION SECTION ===
Device Model: WDC WD100EMAZ-00WJTA0
LU WWN Device Id: 5 000cca 267c84a01
Firmware Version: 83.H0A83
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jul 12 13:09:29 2023 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 93) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: (1132) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 130 130 054 Old_age Offline - 108
3 Spin_Up_Time 0x0007 149 149 024 Pre-fail Always - 448 (Average 437)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 65
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 128 128 020 Old_age Offline - 18
9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 37332
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 65
22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1577
193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1577
194 Temperature_Celsius 0x0002 135 135 000 Old_age Always - 48 (Min/Max 23/53)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 37330 -
# 2 Extended offline Completed without error 00% 377 -
# 3 Extended offline Completed without error 00% 209 -
# 4 Short offline Completed without error 00% 0 -

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


=== START OF INFORMATION SECTION ===
Device Model: WDC WD100EMAZ-00WJTA0
LU WWN Device Id: 5 000cca 267c7f7ae
Firmware Version: 83.H0A83
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jul 12 13:10:04 2023 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 93) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: (1048) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 131 131 054 Old_age Offline - 104
3 Spin_Up_Time 0x0007 148 148 024 Pre-fail Always - 438 (Average 448)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 92
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 128 128 020 Old_age Offline - 18
9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 37298
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 90
22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1613
193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1613
194 Temperature_Celsius 0x0002 138 138 000 Old_age Always - 47 (Min/Max 22/52)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 37297 -
# 2 Extended offline Completed without error 00% 343 -
# 3 Extended offline Completed without error 00% 176 -

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


=== START OF INFORMATION SECTION ===
Device Model: WDC WD100EMAZ-00WJTA0
LU WWN Device Id: 5 000cca 267caaea7
Firmware Version: 83.H0A83
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jul 12 13:10:34 2023 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 93) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: (1125) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 130 130 054 Old_age Offline - 108
3 Spin_Up_Time 0x0007 148 148 024 Pre-fail Always - 439 (Average 451)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 33
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 128 128 020 Old_age Offline - 18
9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 36916
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 32
22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1533
193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1533
194 Temperature_Celsius 0x0002 138 138 000 Old_age Always - 47 (Min/Max 24/51)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 36913 -

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


=== START OF INFORMATION SECTION ===
Device Model: WDC WD100EMAZ-00WJTA0
LU WWN Device Id: 5 000cca 267cc21e0
Firmware Version: 83.H0A83
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jul 12 13:10:52 2023 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 93) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: (1131) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 130 130 054 Old_age Offline - 108
3 Spin_Up_Time 0x0007 253 253 024 Pre-fail Always - 89 (Average 123)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 81
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 128 128 020 Old_age Offline - 18
9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 36915
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 80
22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 098 098 000 Old_age Always - 3452
193 Load_Cycle_Count 0x0012 098 098 000 Old_age Always - 3452
194 Temperature_Celsius 0x0002 147 147 000 Old_age Always - 44 (Min/Max 24/51)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 36913 -

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


=== START OF INFORMATION SECTION ===
Device Model: WDC WD100EMAZ-00WJTA0
LU WWN Device Id: 5 000cca 267c878a1
Firmware Version: 83.H0A83
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jul 12 13:11:26 2023 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 93) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: (1199) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 130 130 054 Old_age Offline - 110
3 Spin_Up_Time 0x0007 153 153 024 Pre-fail Always - 435 (Average 425)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 65
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 128 128 020 Old_age Offline - 18
9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 37232
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 64
22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1584
193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1584
194 Temperature_Celsius 0x0002 144 144 000 Old_age Always - 45 (Min/Max 23/52)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 37230 -
# 2 Extended offline Completed without error 00% 277 -
# 3 Extended offline Completed without error 00% 109 -

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.


=== START OF INFORMATION SECTION ===
Device Model: WDC WD100EMAZ-00WJTA0
LU WWN Device Id: 5 000cca 267c85b4d
Firmware Version: 83.H0A83
User Capacity: 10,000,831,348,736 bytes [10.0 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
Form Factor: 3.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jul 12 13:11:34 2023 MST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED


SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 129 129 054 Old_age Offline - 112
3 Spin_Up_Time 0x0007 151 151 024 Pre-fail Always - 429 (Average 443)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 47
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 128 128 020 Old_age Offline - 18
9 Power_On_Hours 0x0012 095 095 000 Old_age Always - 37429
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 47
22 Unknown_Attribute 0x0023 100 100 025 Pre-fail Always - 100
192 Power-Off_Retract_Count 0x0032 099 099 000 Old_age Always - 1569
193 Load_Cycle_Count 0x0012 099 099 000 Old_age Always - 1569
194 Temperature_Celsius 0x0002 138 138 000 Old_age Always - 47 (Min/Max 23/52)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed without error 00% 37427 -
# 2 Extended offline Completed without error 00% 475 -
# 3 Extended offline Completed without error 00% 307 -
# 4 Short offline Completed without error 00% 0 -

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

Full disclosure... I am embarrassed to admit it, but I believe I must've gotten too used to the failures during scrubs, because I see a big gap in between my long tests for these drives.

Maybe I never did them? I thought I did a couple when they first had issues, but I don't know now.

At any rate, in the thread that covers testing, the author mentioned doing daily short tests and weekly long tests. I will need to figure out how to set that up after I get over this power requirement hurdle.

---

With the pretext out of the way, this most recent issue got me thinking about the power supply and UPS its attached to. The issues I have are almost always concentrated in the same vdev, where I have 10tb "white label" specials that I shucked from EasyStores/Elements (I can't remember which).

I don't recall doing a thorough power requirement analysis when planning the build, but I must've arrived at the Seasonic FOCUS 850 Gold somehow.

Here's the build (borrowing @moodx's table scheme):

Hardware	Qty	Potential Watts	Idle Watts	Total Potential Watts	Total Idle Watts
Norco 4224 (24-hot-swap / 4u)	1	5	5	5	5
ASRock EPC612D8 SSI	1	50	50	50	50
E5-1650V3	1	185	63	185	63
Dynatron R27 80mm 2 Ball CPU Cooler	1	8.16	2.16	8.16	2.16
Samsung 970 Evo PLUS (250gb)	2	5	0.03	10	0.06
Noctua NF-F12 PWM, 4-Pin (120mm)	4	0.6	0.4	2.4	1.6
Noctua NF-A8 PWM, 4-Pin (80mm)	2	0.96	0.75	1.92	1.5
Samsung 32gb DDR4 2133 ECC	8	6	6	48	48
LSI 9211-8i	1	14.63	8.04	14.63	8.04
LSI 9200-8E	1	13.2	7.92	13.2	7.92
HP 487738-001 24port Expander	1	15.1	12.7	15.1	12.7
WD Red 4 TB	12	35	6.5	420	78
WD "Red" 10TB (Ext / Shuck) EasyStore	12	35	2.8	420	33.6
TOTAL				1193.41	311.58

Targets (based on instructions):

• Peak: 1491.25
• Idle: 298.25 < 311.58 (Passes)

Caveats:

• Guessing on the Case, MOBO, CPU, RAM, and Expander.
• Using the 35W for potential watts for the drives.
• Planning to replace all drives with Red Pros, which spin at 7200 and I've read can pull up to 45W.

Planning to buy as soon as possible (today, in fact, because of Prime Day):

• PSU choices....
  • 1200W PSU - Seasonic Vertex GX-1200 (Fails target)
    • https://www.amazon.com/gp/product/B0BQRFC497/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1
  • 1500W PSU - Corsair HX1500i (Purchased)
    • https://www.amazon.com/Corsair-HX1500i-Platinum-Ultra-Low-Connectors/dp/B0B3S8GMCK
• 1500W UPS - CyberPOwer PR1500LCD (Purchased)
  • https://www.amazon.com/gp/product/B0083TXNMM/ref=ox_sc_act_title_2?smid=ATVPDKIKX0DER&psc=1

Questions:

• Will those be enough or should I go bigger?
• Will the PSU be able to handle the low idle?

Notes:

• This exercise has got me thinking that I need to downsize my bay counts and increase my disk capacities. Something like a 2u/12-bay w/ 20tb disks, and redundant power supplies. That will have to wait until I can afford it.

Edits:

1. Added missing targets and new power supply option.
2. Gave it another thought and decided to create the orders for 1500W units. I delayed the deliveries to save more money (additional 1%), so that will give me time to change my mind if the feedback received points in another direction. Also removed some text from the tests to get under the character count limit.

 

[NickF]

@twf85 if you actually make your own thread about this I’ll try to take a look if you @mention me there.
You’re not going to find help in the comment section of a resource

 

[jgreco]

• Will those be enough or should I go bigger?
• Will the PSU be able to handle the low idle?

Most modern PSU's are capable of handling a 5-10% low idle, but become less efficient when doing so. This is no longer the mid 2000's where you might have had a PSU freak out. Your 1500W PSU should be fine, assuming your other numbers are correct. We run a lot of Supermicro with the dual 920SQ's which provides a lot of headroom and doesn't usually tax the PSU's, even during spinup. A PSU in the 1200-1500 range is a pragmatic single PSU option.

1500W UPS - CyberPOwer PR1500LCD

Be aware that a "1500W UPS" typically refers to "when the UPS is new and also stocked with fresh batteries"; it is not uncommon for a "1500W" UPS to go a bit wonky when asked to provide less than 1500W down the road. Don't panic. What this really means is that you should not try to spin up the NAS when you're on emergency power. You should be good to drive the continuous load (which may be 500 watts or so).

You’re not going to find help in the comment section of a resource

Well, that's not true. But I do admit, every time I see a reply in this thread I kinda hold my breath wondering how someone is going to choose to tell me that I'm all wrong about how to calculate power utilization because their Kill-A-Watt gives them significantly lower numbers. (eyeroll).

 

[Constantin]

Few to none of us have a good insight into the actual loads of the PSU, how well it’s doing meeting that load, or what the actual PSU limits are.

I wonder if at some point motherboard manufacturers will be able to create a SMART-like system for PSUs, noting degradation re: stability, etc. Likely would need an interface between the PSU and the motherboard like USB?

 

[Ericloewe]

High-end server PSUs are probably not far off from that, but that gets expensive really quickly. RGB bling in comparison is dirt cheap and easier to sell.

 

[Constantin]

High-end server PSUs are probably not far off from that, but that gets expensive really quickly. RGB bling in comparison is dirt cheap and easier to sell.

Agreed, the gamer crowd will always appreciate a blingie PSU over something more efficient or reliable. But there is a market - note existence of dual PSU chassis out there, just no common standard like ATX pinout to enable standardization, adoption, and cost reduction.

That is a shame as this could be a cool point of differentiation for "NAS PSU" just like WD likes to pretend its WD Pro drives are meaningfully better in NAS applications than their entry-level ones.

 

[NickF]

There’s a reason why I typically shoot for the high end models from Seasonic (not PRIME or whatever other lower SKUs, but I have had good results with those too)

I know I’m getting something overbuilt and overkill with insanely low ripple. It’s easy enough to buy a super highend power supply so as to potentially save you a bunch of troubleshooting later.

 

[Constantin]

There’s a reason why I typically shoot for the high end models from Seasonic (not PRIME or whatever other lower SKUs, but I have had good results with those too)

I know I’m getting something overbuilt and overkill with insanely low ripple. It’s easy enough to buy a super highend power supply so as to potentially save you a bunch of troubleshooting later.

Agreed. On top of that, when something goes wrong, Seasonic offers advance-replacement for a $75 deposit. No muss no fuss replacement of a failed prime PSU in year 6 of the (12 year?) warranty.

The customer service at Seasonic is almost as good as SuperMicro and a step below iXsystems.

 

[Davvo]

I was wondering where the 15-30W per fan potential power come from. Might be a typo of 1.5-3.0W?

 

[jgreco]

I was wondering where the 15-30W per fan potential power come from. Might be a typo of 1.5-3.0W?

I do not make typos of that sort.

Borrowed from the thread at https://www.truenas.com/community/threads/i-need-some-data-points.32829/

Fans - 2x 92mm, 1x 120mm + 1x Intel boxed fan. 0.5A at most.

Really? In what fantasy world?


Ok, so I didn't have two 92mm fans and a 120mm readily available so I just used two 120's and an Intel fan. There it is. 1.07 amps - very near the lower number I mentioned (15W). And, horrifyingly, I caught the inrush current up at 2.72 amps, and a single fan stall at 2.39 amps. Unusual for me to underestimate but there we have it.

 

[Ericloewe]

Is that a Socket 478 cooler? For a Pentium 4?

 

[NickF]

Is that a Socket 478 cooler? For a Pentium 4?

If it helps, the source post was from 2015. That makes the cooler only ~10 years old, instead of ~20 years now.

 

[Ericloewe]

Look, I was making a friendly joke about @jgreco's junk bin being deeper than mine, that does not give you the right to make me feel old!

 

[jgreco]

Is that a Socket 478 cooler? For a Pentium 4?

I was supposed to pull a NIB cooler from a modern Intel CPU? One that was going to be fundamentally the same?

 

[Ericloewe]

I'll drop one in the mailbox next time I'm in the neighborhood, I have a box full of them. Sounds impressive, but it's not, they're just bulky things.

 

[jgreco]

I suppose if you're building desktop CPU systems...