Lenovo 7XB7A00036 Thinksystem 2.5INCH 1TB 7.2K SATA 6GB HOT Swap 512N HDD

Lenovo 7XB7A00036 ThinkSystem 2.5-Inch 1TB 7.2K SATA 6Gb/s Hot-Swap 512n Hard Drive

Overview

The Lenovo 7XB7A00036 is a 2.5-inch, 1TB enterprise hard drive spinning at 7,200 RPM with a SATA 6Gb/s interface and native hot-swap support — purpose-built for Lenovo ThinkSystem server storage environments where drive replacement without downtime is a hard operational requirement. At 0.70 lb and fitting the standard 2.5-inch bay geometry (7.00 × 2.00 × 5.00 in), it slots directly into hot-swap bays without tools or server shutdown. If your ThinkSystem SR950 is running production workloads around the clock, this is the drive class that allows a failed unit to be swapped in seconds rather than scheduling a maintenance window.

Key Features

• 1TB Capacity at 7,200 RPM: The 7,200 RPM spindle speed keeps sequential throughput competitive with enterprise SATA HDDs — relevant for workloads like large-file logging, backup targets, or tiered storage where SSD cost is unjustified but idle-platter latency isn't acceptable. 1TB is a practical tier for per-server OS volumes or structured data partitions that don't yet justify NVMe.
• SATA 6Gb/s Interface: The 6Gb/s SATA III link delivers up to 600MB/s theoretical bandwidth to the host controller — well above what a single 7.2K spinner can saturate, meaning the interface won't be your bottleneck. This also ensures backward compatibility with SATA II (3Gb/s) backplanes if you're mixing server generations.
• Hot-Swap Ready: Hot-swap support means the drive can be removed and replaced while the server remains powered and running — no scheduled downtime, no service disruption. For environments running RAID arrays inside a ThinkSystem chassis, this is the operational baseline: a failed drive comes out, a new one goes in, the RAID controller rebuilds in the background.
• 512n Sector Format: The 512-byte native sector size ensures compatibility with legacy operating systems, older RAID controllers, and hypervisors that haven't been updated to handle 512e or 4Kn Advanced Format drives. If you're running mixed-generation infrastructure, 512n avoids the sector-alignment headaches that can silently degrade write performance on mismatched controllers.
• 2.5-Inch Small Form Factor: The 2.5-inch drive bay footprint fits high-density ThinkSystem chassis configurations where 3.5-inch drives simply don't fit. Blade-adjacent and 2U rackmount servers typically require this form factor — the 7XB7A00036 covers those without an adapter caddy.
• 5V Operating Voltage: Operating at 5V (versus the 12V rail that 3.5-inch HDDs draw from), this drive reduces per-drive power consumption — a measurable factor when a dense chassis is carrying 24 or more drives. Lower heat output per drive also means less cooling load in high-density rows.
• Enterprise-Grade Component for Server/Workstation: This drive is classified and sourced as a server/workstation component — not a desktop or surveillance-optimized unit. The firmware tuning targets RAID rebuild performance and error recovery time limits appropriate for enterprise RAID controllers, not consumer-grade error handling that can trigger controller timeouts.

Integration and Compatibility

The Lenovo ThinkSystem storage line certifies the 7XB7A00036 for the ThinkSystem SR950, Lenovo's flagship 4-socket enterprise server built for memory-intensive and mission-critical workloads. The hot-swap backplane in the SR950 is designed to accept 2.5-inch SATA/SAS drives in this exact form factor and voltage profile. Before deploying into other ThinkSystem models, verify the target chassis supports 2.5-inch SATA hot-swap bays and that the system firmware recognizes 512n sector drives — most current ThinkSystem platforms do, but older firmware revisions in mixed-fleet environments occasionally require an update.

The SATA interface also means this drive is not compatible with SAS-only backplanes. SAS controllers will generally detect SATA drives (SAS is backward-compatible with SATA in most implementations), but SATA controllers cannot address SAS drives. Confirm your backplane type before ordering if you're mixing drive protocols in the same chassis.

For enterprise server hard drives deployed in RAID configurations, pair this drive with a Lenovo ThinkSystem RAID adapter that supports 6Gb/s SATA. RAID 5 or RAID 6 configurations across multiple 7XB7A00036 units provide the redundancy appropriate for always-on production storage tiers. Refer to the Lenovo ServerProven compatibility database for the authoritative list of supported ThinkSystem platforms beyond the SR950.

Frequently Asked Questions

Q: Is the Lenovo 7XB7A00036 compatible with ThinkSystem servers other than the SR950?

A: The SR950 is the confirmed compatible platform from available evidence. Lenovo's ServerProven database is the authoritative source for expanded compatibility across other ThinkSystem models — verify your specific chassis and firmware revision there before deploying.

Q: What does hot-swap support mean in practice for this drive?

A: Hot-swap means you can physically remove and replace the 7XB7A00036 while the server remains powered on and running. In a RAID array, the controller handles the drive removal event and initiates a rebuild automatically once the replacement drive is seated — no server reboot or scheduled maintenance window required.

Q: What is 512n sector format and why does it matter?

A: 512n (512-byte native) means each sector on the drive is physically 512 bytes — the traditional format. This ensures compatibility with legacy RAID controllers, older operating systems, and hypervisors that may not support 512e (emulated) or 4Kn (4K native) Advanced Format drives. If your environment includes mixed-generation servers, 512n is the safest choice.

Q: Can the 7XB7A00036 be used in a SAS backplane?

A: Most SAS controllers and backplanes support SATA drives due to SATA's backward compatibility in the SAS protocol stack, but you should verify your specific backplane specifications. The reverse is not true — this SATA drive cannot operate in a SATA-only backplane that requires SAS.

Q: What RAID levels are appropriate for this drive in a ThinkSystem environment?

A: RAID 5 or RAID 6 are common configurations for enterprise SATA HDDs in ThinkSystem chassis. RAID 6 provides two-drive fault tolerance, which is recommended for larger arrays where the rebuild time on a failed drive increases exposure to a second failure. Pair with a Lenovo ThinkSystem RAID adapter that supports 6Gb/s SATA.

Karl Wilson

The 7XB7A00036 is a straightforward enterprise SATA pick, but the detail that actually matters for system integrators is the 512n sector format combined with hot-swap in a 2.5-inch package. When you're deploying into mixed-vintage ThinkSystem environments — which is more common than vendors like to admit — 512n avoids the silent write-performance degradation that trips up 512e drives on controllers that haven't been updated to handle Advanced Format properly.

Technical Highlights:

• 7,200 RPM / SATA 6Gb/s: Keeps the drive competitive for sequential-heavy workloads — logging, backup targets, tiered cold storage — without the SSD cost premium. The 6Gb/s link ensures the interface isn't the bottleneck.
• Hot-Swap Architecture: The physical hot-swap mechanism supports zero-downtime drive replacement in ThinkSystem SR950 bays. RAID rebuild begins the moment the replacement is seated — no maintenance window, no service impact.
• 5V Power Rail / 2.5-Inch Form Factor: Lower draw than 3.5-inch alternatives on the 12V rail. In a 24-bay dense chassis, that per-drive power delta compounds into real thermal and PSU headroom savings.

Deployment Considerations:

• Confirm your ThinkSystem backplane type before ordering — SATA drives will seat in most SAS backplanes but verify your specific controller firmware supports SATA on those ports. Not all mixed backplanes are configured identically.
• At 7,200 RPM SATA, this drive is not appropriate as primary storage for IOPS-sensitive workloads like transactional databases or VDI. For those use cases, move to NVMe or SAS. Use this drive where sequential throughput and cost-per-TB matter more than latency.

This drive fits best in ThinkSystem SR950 configurations serving as backup repositories, log aggregation targets, or tiered storage where cost-per-TB discipline matters and the workload profile is sequential rather than random-access.