Specifications
Model Number
ST24000NM002H
SED Variant
ST24000NM001H (SED), ST24000NM009H (SED-FIPS SATA)
Capacity
24 TB
Form Factor
3.5-inch, 26.1 mm height
Interface
SATA 6 Gb/s
Recording
CMR, helium sealed
Sector Format
512e (fast format 4Kn)
Rotational Speed
7,200 rpm
Cache
512 MB multi-segmented
Sustained Transfer OD
285 MB/s (272 MiB/s)
Average Latency
4.16 ms
Random Read / Write (4K QD16)
168 / 550 IOPS
MTBF
2,500,000 hours
AFR
0.35%
Unrecoverable Errors
<1 in 10^15 bits read
Workload Rating
550 TB/year
Power (idle / operating)
6.3 W idle, 8.9 W max operating
Security
Instant Secure Erase (ISE), Seagate Secure, SED-FIPS option
Features
Super Parity, PowerChoice, PowerBalance, RSA 3072 firmware verification
Warranty
5 years limited
Seagate Exos X24 model numbers
| Model | Interface | Capacity | Security |
|---|---|---|---|
| ST24000NM002H | SATA 6Gb/s | 24 TB | ISE |
| ST24000NM001H | SATA 6Gb/s | 24 TB | SED |
| ST24000NM007H | SAS 12Gb/s | 24 TB | ISE |
| ST24000NM005H | SAS 12Gb/s | 24 TB | SED |
| ST20000NM002H | SATA 6Gb/s | 20 TB | ISE |
Use Case
Exos X24 is the capacity tier of a bulk-storage node where cost per usable terabyte dominates: a 24-bay 4U JBOD reaches 576 TB raw, and the 550 TB/year workload rating keeps it in warranty under sustained rebuild traffic. Instant Secure Erase matters at decommission time, when drives leave a datacenter without being physically destroyed.
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