400-ATJN: Dell 600GB 15K RPM SAS 12Gb/s 512n 2.5in Hot-Plug Hard Drive
Also listed as: 04H6NV, 4H6NV, ST600MP0006, AL14SXB60EN · made by Seagate
The Dell 400-ATJN is a Dell 600GB 15K RPM SAS 12Gb/s 512n 2.5in Hot-Plug Hard Drive delivering 600GB of rotational storage at 15000 rpm over SAS 12Gb/s in a SFF 2.5in carrier. Manufactured by Seagate, the 400-ATJN provides dependable bulk storage for Dell R730, R730XD, R630, R740 enterprise servers.
Specifications
| Part number | 400-ATJN |
|---|---|
| Brand | Dell |
| Made by | Seagate |
| Type | Hard drives |
| Other numbers | 04H6NV, 4H6NV, ST600MP0006, AL14SXB60EN |
| Status | end of sale |
| Capacity (GB) | 600 |
| Interface | SAS 12Gb/s |
| Form factor | SFF 2.5in |
| Speed | 15000 rpm |
| Endurance | Heavy OLTP enterprise mission-critical |
About the 400-ATJN
The Dell 400-ATJN is a Dell 600GB 15K RPM SAS 12Gb/s 512n 2.5in Hot-Plug Hard Drive offering 600GB of rotational enterprise storage operating at 15000 rpm over SAS 12Gb/s in a SFF 2.5in format. Built with multi-platter mechanical assemblies from Seagate, the 400-ATJN provides dependable sequential throughput and 24/7 duty-cycle durability. In Dell's storage portfolio, 400-ATJN delivers economical storage capacity for secondary storage tiers, backup targets, and media streaming pools.
Compatibility
The 400-ATJN is compatible exclusively with 2.5-inch small form factor drive bays across Dell servers including R730, R730XD, R630, R740. The 400-ATJN mounts inside a DXD9H (14G–16G) hot-plug drive carrier and requires a SAS or SATA controller matching its SAS 12Gb/s specification. Part 400-ATJN cannot be installed into 3.5-inch drive bays without an approved mechanical adapter bracket.
How to identify a genuine unit
Genuine 400-ATJN units feature a Dell enterprise drive label displaying DP/N 04H6NV, 600GB capacity, 15000 rpm rotational speed, and Seagate model markings ST600MP0006. In iDRAC under Physical Disks, the 400-ATJN registers with certified Dell firmware, active SMART diagnostics, and spindle temperature monitoring. The DXD9H (14G–16G) carrier for 400-ATJN includes status and activity indicator light pipes.
Buying used
When evaluating a pre-owned 400-ATJN, check SMART logs via OpenManage or smartctl to verify zero reallocated sectors (attribute 0x05) and zero pending defects (attribute 0xC5). Check power-on hours and execute an extended drive self-test on the 400-ATJN to verify smooth bearing rotation without head-parking noise. Ensure the correct DXD9H (14G–16G) caddy is supplied with the 400-ATJN.
Fits these models
- Dell PowerEdge R730
- Dell PowerEdge R730xd
- Dell PowerEdge R630
- Dell PowerEdge R740
- Dell PowerEdge R640
- Dell PowerVault MD1420
Equivalent part numbers
- Seagate ST600MP0006 Seagate Enterprise Performance 15K.6 SAS HDD OEM base
FAQ
Why were 15K RPM drives used instead of SSDs?
Historically, 15K SAS drives offered the lowest latency mechanical seek performance before enterprise SSDs reached cost parity.
Does this drive use native 512-byte sectors?
Yes, it uses native 512n sector formatting, ensuring compatibility with older enterprise operating systems and legacy RAID sets.
Buying or selling 400-ATJN?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell PowerEdge 600GB 15K RPM SAS Hard Drive Specifications, checked 2026-10-27