Lenovo 4XB7A80318 ThinkSystem 2.5-Inch PM1653 960GB SAS 24Gbps Enterprise SSD
Overview
The Lenovo 4XB7A80318 is a 960GB 2.5-inch SAS 24Gbps solid-state drive built for ThinkSystem servers and workstations running latency-sensitive, mixed-workload storage tasks. Where high-density HDD arrays introduce mechanical seek latency measured in milliseconds, this V-NAND TLC drive holds read latency to 120 µs and write latency to 45 µs — a meaningful difference when database queries, virtualization I/O, or surveillance video retrieval stacks are hammering storage simultaneously. SAS 24Gbps interface doubles the per-lane bandwidth of SAS 12Gbps, so you're not bandwidth-constrained at the drive level even in heavy sequential workloads.
Key Features
- 960GB V-NAND TLC Capacity: Enough usable storage for dense application data or several days of high-bitrate surveillance footage per drive. TLC NAND trades some endurance for cost-per-GB versus SLC or MLC — verify your write workload fits the rated endurance before deploying in write-heavy database roles.
- SAS 24 Gbps Interface: At 24 Gbps, the interface is no longer the bottleneck — throughput headroom is there for burst-heavy workloads. Requires a SAS 24Gbps-capable HBA or expander; standard SAS 12Gbps controllers will negotiate down and cap bandwidth accordingly.
- 420,000 Random Read IOPS (4KB): At 420K 4KB random read IOPS, this drive handles aggressive mixed-read workloads — think concurrent VMS playback, database selects, or virtual machine boot storms — without saturating at the storage tier.
- 60,000 Random Write IOPS (4KB): Write IOPS at 60K 4KB is solid for a mixed-use SAS SSD; if your deployment is predominantly sequential write (e.g., direct-to-disk video recording at high bitrate), validate that figure against your stream count and bitrate budget before committing to this SKU.
- 120 µs Read Latency / 45 µs Write Latency: Sub-millisecond on both read and write means the drive won't introduce perceptible lag in latency-sensitive operations. For surveillance platforms with real-time forensic search or AI-assisted analytics querying stored footage, this matters more than raw throughput.
- 2,000,000-Hour MTBF: A 2-million-hour rated MTBF reflects an enterprise reliability spec rather than a consumer or near-line grade. In a multi-drive RAID or JBOD array, individual drive reliability directly sets your replacement-interval planning.
- Low Active Power Draw: At 11.5W read and 14.7W write, this drive runs cool enough to fit within standard 2.5-inch hot-swap bays without requiring exotic airflow. Power delta between read and write states is small — predictable across mixed workloads.
- 2.5-Inch Small Form Factor: Fits standard 2.5-inch hot-swap bays across the ThinkSystem lineup. The 15mm height (standard 2.5-inch height) is compatible with typical SFF drive carriers — verify carrier compatibility with your specific server model before ordering.
Integration and Compatibility
The 4XB7A80318 is designed as a ThinkSystem component for Lenovo server and workstation platforms. The SAS 24Gbps interface requires a compatible HBA or RAID controller that supports the SAS-4 (24Gbps) protocol — check your server's controller generation before specifying this drive. While SAS is backward-compatible at the physical connector level, a SAS 12Gbps controller will negotiate to 12Gbps and leave half the interface bandwidth on the table.
For environments pairing compute with network video recorders or high-density storage arrays, this drive fits anywhere a standard 2.5-inch SAS hot-swap slot is available. The dual-interface note in the source data (SAS + Ethernet) is notable — this may indicate support for SAS-over-Ethernet or NVMe-oF capability on compatible infrastructure; verify against your specific controller and fabric configuration.
Certifications include UL, TUV, FCC, IC, CB, CE Mark, C-Tick Mark, BSMI (Taiwan), KCC (Korea EMI), and VCCI — covering major North American, European, and Asia-Pacific regulatory requirements. If you are deploying into regulated environments with import or emissions compliance requirements, this SKU clears the standard list. Review the enterprise storage category for complementary drive options and compatible server and storage platforms.
Frequently Asked Questions
Q: What interface does the Lenovo 4XB7A80318 use, and what controller does it require?
A: The 4XB7A80318 uses a SAS 24Gbps (SAS-4) interface. It requires a SAS 24Gbps-capable HBA or RAID controller to achieve full bandwidth. It will physically connect and operate on SAS 12Gbps controllers, but will negotiate down to 12Gbps, limiting throughput.
Q: What is the random read IOPS performance of this SSD?
A: The drive is rated at 420,000 IOPS on 4KB random reads. Random write performance is rated at 60,000 IOPS on 4KB blocks.
Q: What NAND type does the 4XB7A80318 use?
A: It uses V-NAND TLC (Triple-Level Cell) flash memory. TLC offers a favorable capacity-to-cost ratio compared to MLC or SLC, but carries a lower write endurance ceiling — factor this into your workload assessment for heavy-write roles.
Q: What certifications does this drive carry?
A: The 4XB7A80318 holds UL, TUV, FCC, IC, CB, CE Mark, C-Tick Mark, BSMI (Taiwan), KCC (Korea EMI), and VCCI certifications, covering North American, European, and major Asia-Pacific regulatory standards.
Q: What is the rated MTBF for this drive?
A: Lenovo rates the drive at 2,000,000 hours mean time between failures (MTBF), consistent with enterprise-grade reliability specifications.
Q: What are the power consumption figures for this SSD?
A: Active read power draw is rated at 11.5W; active write power is 14.7W. Both figures are within the normal operating envelope for 2.5-inch enterprise SSDs in standard hot-swap bays.
The 4XB7A80318 sits squarely in the mixed-use enterprise SSD tier — the 420,000 read IOPS figure is the spec I'd anchor on when scoping it for a ThinkSystem platform running concurrent read-heavy workloads like VMS forensic search or virtualized surveillance analytics. That latency profile (120 µs read / 45 µs write) is where it earns its keep versus near-line SAS HDDs, which can easily hit 5–10ms on random seeks.
Technical Highlights:
- SAS 24Gbps Bandwidth: Interface headroom is genuine — 24Gbps is double SAS 12Gbps per lane, so sustained sequential reads won't saturate the link in modern RAID configurations.
- 60,000 Write IOPS: Solid for mixed workloads, but this is a TLC drive — if your application writes heavily and continuously, validate the drive's rated write endurance against your daily write volume before specifying it across a large array.
- 2M-Hour MTBF: Enterprise MTBF figure supports predictable maintenance scheduling in multi-bay deployments where unplanned failures have operational consequences.
Deployment Considerations:
- Confirm your ThinkSystem server's HBA or RAID controller supports SAS 24Gbps (SAS-4) — a SAS 12Gbps controller will physically accept this drive but cap the interface at half the rated bandwidth.
- TLC NAND write endurance is lower than MLC; for write-dominant applications (high-bitrate direct-to-disk recording, heavy database logging), validate the drive's TBW rating against your expected daily write volume to project realistic replacement intervals.
For ThinkSystem servers handling concurrent VMS playback, real-time analytics, and archived footage retrieval — where sub-millisecond storage latency directly affects query response times — this drive delivers the IOPS profile needed without the bulk and power draw of an all-flash NVMe array.
