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4XB0K12258
Lenovo ThinkServer 2.5in 400GB PM1635 Enterprise Mainstream...
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4XB0K12258 is a high-performance HDD engineered for demanding enterprise applications. It features a 3.5-inch form factor, SATA III interface, 7200 RPM spindle speed, 4 TB storage capacity, and a 128 MB cache, all supported by a robust annual workload rating of 180 TB/yr and an MTBF of 1,000,000 hours, ensuring 99.9% operational reliability. Designed for desktop, server, NAS, and surveillance use, this drive is optimized for data centers and high-demand storage environments.
This model delivers efficient power management with 8 Watts during read/write operations and 5 Watts when idle. Advanced features such as Helium-Sealed construction, vibration protection, and dual actuator technology further enhance its performance and longevity, making 4XB0K12258 an ideal choice for mission-critical applications in data centers, desktops, NAS systems, and surveillance setups.
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| 4XB0K12258 |  01DC402 |  00NA231 |  00WG690 |  4XB0K12301 | |
|---|---|---|---|---|---|
| Advanced Features | Dual Actuator | ||||
| Annual Workload Rating | 180 TB/yr | ||||
| Average Latency | N/A | ||||
| Cache (Buffer Size) | 128 MB | ||||
| Data Transfer Rate | Up to 250 MB/s | ||||
| Depth | 4.00 inches | ||||
| Drive Bays Supported | Multi-bay | ||||
| Drive Type | HDD | ||||
| Encryption Support | No | ||||
| Form Factor | 3.5-inch | ||||
| Height | 1.03 inches | ||||
| Helium Sealed | Helium-Sealed | ||||
| Interface | SATA III | ||||
| Operating Temperature | 5–60°C | ||||
| Power Consumption (Idle) | 5 Watts | ||||
| Power Consumption (Read/Write) | 8 Watts | ||||
| Product Name | 4XB0K12258 Enterprise Series HDD | ||||
| Product Type | Hard Drive | ||||
| Spindle Speed (RPM) | 7200 RPM | ||||
| Storage Capacity | 4 TB | ||||
| Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | ||||
| Vibration Protection | Yes | ||||
| Weight | 1.5 lbs | ||||
| Width | 5.79 inches |
4XB0K12258 Lenovo 400GB PM1635 SSD delivered reliable 12Gb SAS performance with smooth hot-swap support in our ThinkServer.
Consistent enterprise throughput and stable latency under sustained workloads.
Strong compatibility with Lenovo platforms and dependable uptime.
Reliable SAS SSD for virtualization and transactional systems.
Predictable performance and solid endurance metrics.
The Lenovo ThinkServer PM1635 is a 2.5-inch, 400 GB enterprise-class solid-state drive with a 12 Gb/s SAS interface and hot-swap capability for high-performance server storage.
The PM1635 SSD uses a 12 Gb/s SAS (Serial Attached SCSI) interface to deliver low latency and high throughput in enterprise environments.
The PM1635 SSD is compatible with Lenovo ThinkServer and System x series servers that support 2.5-inch 12 Gb/s SAS hot-swap drives.
The PM1635 SSD delivers up to 95 K random read IOPS, 35 K random write IOPS, and sequential transfer rates up to 1,900 MB/s.
Yes, the PM1635 SSD supports hot-swap operation, allowing you to replace drives without shutting down the server.
The PM1635 SSD provides an endurance rating of 1.3 full drive writes per day (DWPD) over a five-year period.
Yes, the PM1635 SSD features on-board power-loss protection capacitors to safeguard data integrity during unexpected power outages.
The PM1635 balances high performance, endurance, and reliability at a competitive price point for general-purpose and mixed-workload data centers.
The PM1635 SSD is ideal for database servers, virtual desktop infrastructure (VDI), web serving, caching, and mixed transactional workloads.
To install the PM1635 SSD, insert it into an available 2.5-inch hot-swap drive bay in your ThinkServer, secure the drive tray, and configure it in the server’s RAID controller utility.
The PM1635 SSD comes with a five-year limited warranty covering defects in materials and workmanship under normal use.
You can update the PM1635 SSD firmware using Lenovo’s XClarity Controller or the System Update utility with the latest firmware package from Lenovo’s support site.
The PM1635 SSD has an MTBF rating of 2 million hours, ensuring high reliability for enterprise applications.
The PM1635 SSD measures 100.45 mm × 69.85 mm × 15 mm and weighs approximately 90 grams.
The PM1635 SSD operates reliably between 0 °C and 70 °C (32 °F to 158 °F) for standard ambient conditions.