Seagate 4TB SAS (ST4000NM0023)Specs, test results and price
Currently sold out, 2 units tested since Oct 2026 · 2 units tested in-house
In stock now
No ST4000NM0023 units listed right now
We restock this model from new lots as they pass testing. Ask for a quote and we will hold units from the next batch, or browse what is in stock today.
About the ST4000NM0023
The Seagate ST4000NM0023 is a 4TB enterprise hard drive built around a SAS 6Gb/s interface and a 3.5 in form factor, spinning at 7,200 rpm. This part number is a common choice in rack servers and storage arrays where SAS connectivity and a 3.5 in bay are the standard, and it is typically deployed in multi-drive arrays rather than as a single boot disk.
Every unit that comes through our process is run through a sequential and random read/write benchmark, a full extended (long) self-test that scans the entire platter surface, a power-on hours check against the drive's own internal log, and a SMART read covering reallocated, pending, and uncorrectable sectors along with total power-on hours. In the most recent round, two units of this part number were tested, with a median of roughly 2,610 power-on hours between them.
Both units tested fall into the Light Use tier, meaning their recorded power-on hours were under 20,000. On the benchmark side, this pair returned a median sequential read of 193 MBps and a median sequential write of 189 MBps. As of this testing round, neither unit passed our criteria, so none are currently listed in stock.
Specifications
| Brand | Seagate |
|---|---|
| Part number | ST4000NM0023 |
| Type | Hard drive |
| Capacity | 4TB |
| Interface | SAS 6Gb/s |
| Form factor | 3.5 in |
| Rotational speed | 7,200 rpm |
Tested units
- Units tested
- 2
- Pass rate
- 0% (0 of 2)
- Power-on hours, median
- 2,610 h
- Power-on hours, range
- 2,610 to 2,611 h
- First tested
- Oct 30, 2026
- Last tested
- Oct 30, 2026
- Sequential read, median
- 193 MB/s
- Sequential write, median
- 189 MB/s
Every unit of this model we have handled, from our test database. What we test
Hours distribution
- Light Use under 20,000 hrs2 units · 100%
Units by usage tier, from their SMART power-on hours. How tiers work
ST4000NM0023 questions
What is this drive typically used for?+
A 4TB 7,200 rpm SAS drive like this is generally used in server storage arrays, RAID sets, and backup or bulk storage roles where SAS connectivity and a 3.5 in bay are required. It is not intended as a single-drive desktop boot disk.
Will this drive work with a SATA controller or backplane?+
No. This model uses a SAS 6Gb/s interface, which requires a SAS-capable controller or backplane; it is not compatible with SATA-only connections.
What does testing on each unit actually check?+
Each unit goes through a sequential and random read/write benchmark, a full extended self-test across the entire disk surface, a cross-check of power-on hours against the drive's internal log, and a SMART read of reallocated, pending, and uncorrectable sector counts along with power-on hours.
What does the Light Use tier mean for this model?+
Light Use covers units with 500 to 20,000 recorded power-on hours. Both units of this part number tested so far fall into this tier, with power-on hours around 2,610.
How many units of this part number have been tested, and how did they perform?+
Two units were tested as of the latest round, with a median sequential read of 193 MBps and median sequential write of 189 MBps, but neither unit passed our test criteria.