Lenovo 7N47A00124 Thinksystem 2.5INCH HUSMM32 400GB Performance SAS 12GB HOT Swap SSD

Lenovo 7N47A00124 ThinkSystem 2.5-Inch HUSMM32 400GB Performance SAS 12Gb/s Hot-Swap SSD

Overview

The Lenovo 7N47A00124 is a 400GB enterprise SAS solid-state drive built for ThinkSystem servers running latency-sensitive, write-intensive workloads — think high-transaction databases, OLTP environments, and storage tiers where queue depth and IOPS consistency matter more than raw capacity. The HUSMM32 targets the performance tier: 240,000 random read IOPS and 166,000 random write IOPS at a 4KB block size, with sequential throughput reaching 1,076 MB/s read and 1,014 MB/s write. Hot-swap 2.5-inch form factor means servicing or swapping failed drives without pulling the server offline — a non-negotiable for high-availability configurations.

Key Features

• 240,000 Random Read IOPS (4KB): At that queue depth, this drive handles the kind of randomized small-block I/O that spins up in OLTP databases and VDI boot storms — workloads where spinning-disk latency collapses throughput. If your application's bottleneck is random reads, this spec directly addresses it.
• 166,000 Random Write IOPS (4KB): Write performance at this level supports write-heavy database logs and journaling without the IOPS cliff that plagues lower-tier SSDs under sustained mixed workloads. Pair this with a RAID controller with write-back cache enabled for maximum effect.
• 1,076 MB/s Sequential Read / 1,014 MB/s Sequential Write: Sequential throughput at 1 GB/s+ means large dataset scans — backups, analytics queries, bulk data migration — complete faster and release I/O channels sooner. The near-symmetrical read/write ratio also simplifies performance modeling for mixed workloads.
• 85 µs Read and Write Latency: Consistent sub-100 microsecond latency on both reads and writes is the differentiator between a performance-tier and a capacity-tier SSD. For applications polling every millisecond, cutting latency variance here reduces jitter at the application layer.
• SAS 12Gb/s Interface: SAS 12Gb/s delivers twice the interface bandwidth of SATA and supports dual-port connectivity, which means the drive can be accessed through two independent paths simultaneously — critical for HA deployments using multipath I/O. This also makes it compatible with existing SAS expanders and backplanes in most ThinkSystem chassis.
• Hot-Swap 2.5-Inch Form Factor: Hot-swap capability lets you pull and replace the 7N47A00124 without a maintenance window. In a RAID array, this translates directly to faster rebuild cycles with zero scheduled downtime — operations teams get the flexibility to respond to drive failures during business hours.
• 2,500,000-Hour MTBF: That's roughly 285 years of theoretical continuous operation — not a promise of longevity, but a measure of the drive's reliability class. Drives rated at this MTBF tier are designed for 24/7 enterprise use, not intermittent desktop or NAS workloads.
• 1,500G Operating Shock / 2.17G Operating Vibration: SSD shock tolerance at 1,500G means the drive survives the kind of mechanical disturbance common in dense rack environments where adjacent drives, fans, and cable management create persistent vibration. For high-density storage arrays, this matters for sustained reliability.

Integration and Compatibility

The 7N47A00124 is validated for deployment in Lenovo ThinkSystem servers. SAS 12Gb/s compatibility requires a SAS HBA or RAID controller — this drive does not operate on standard AHCI SATA controllers. Verify your ThinkSystem server's storage backplane supports 2.5-inch SAS hot-swap before ordering; most ThinkSystem 2U and above chassis with SFF bays are compatible, but blade and dense 1U configurations may differ. The dual-port SAS interface enables multipath configurations when paired with dual-port HBAs and a fabric-aware OS multipath driver (MPIO on Windows Server, DM-Multipath on Linux). For network video recorders and server-based video surveillance storage backends, this drive's IOPS profile suits tiered storage architectures where the SSD tier handles index and metadata while capacity HDDs hold video streams. Buyers evaluating server storage for enterprise deployments should also review server and storage options and consider PoE network switches for the broader infrastructure stack. For SSD selection guidance specific to your workload, consult the storage buying guide.

Frequently Asked Questions

Q: What interface does the Lenovo 7N47A00124 use, and is it compatible with SATA backplanes?

A: The 7N47A00124 uses a SAS 12Gb/s interface. It is not compatible with standard SATA-only backplanes or AHCI controllers. You need a SAS HBA or SAS RAID controller, and a backplane with SFF-8639 or SFF-8482 SAS connectors. Confirm your ThinkSystem server's storage backplane spec before ordering.

Q: Can this drive be replaced without shutting down the server?

A: Yes. The 7N47A00124 is a hot-swap drive. In a properly configured RAID array, you can pull and insert the drive without powering down the server. Actual hot-swap capability also depends on the host server's backplane and RAID controller supporting hot-plug operations.

Q: What is the MTBF rating on the 7N47A00124?

A: The MTBF is rated at 2,500,000 hours, placing it squarely in the enterprise reliability class designed for continuous 24/7 operation.

Q: What are the random IOPS figures for the 7N47A00124?

A: At a 4KB block size, the drive delivers 240,000 random read IOPS and 166,000 random write IOPS. Sequential throughput reaches 1,076 MB/s read and 1,014 MB/s write.

Q: What workloads is the 7N47A00124 best suited for?

A: This is a performance-tier SSD optimized for write-intensive and mixed IOPS workloads: OLTP databases, VDI boot storage, high-transaction application tiers, and any environment where latency consistency below 100 microseconds is a requirement. It is not a capacity-optimized drive — at 400GB, it targets hot-data tiers rather than bulk storage.

Q: What are the physical dimensions and weight of the 7N47A00124?

A: The drive measures 5.00 x 7.00 x 2.00 inches (L x W x H) and weighs 0.65 lb.

Marty Allison

The spec that gets my attention on the 7N47A00124 is the 85 µs latency on both reads and writes — that symmetry is rarer than it looks on paper, and it matters when your storage subsystem serves mixed read/write workloads simultaneously rather than bursty sequential transfers. At 240,000 random read IOPS and 166,000 random write IOPS at 4KB, this drive performs where it counts for transaction-heavy applications.

Technical Highlights:

• SAS 12Gb/s Dual-Port: Dual-port SAS is the reason enterprise IT chooses SAS over SATA for HA storage — two independent paths to the same drive means a failed SAS expander or HBA doesn't take your storage offline. Plan your multipath I/O configuration before commissioning.
• 1,500G Shock Tolerance: In dense rack environments where a dozen drives share a backplane and nearby equipment generates sustained vibration, the 1,500G shock and 2.17G vibration ratings mean this drive doesn't degrade reliability specs the way cheaper SSDs do in real datacenter conditions.
• 2,500,000-Hour MTBF: This positions the drive for continuous duty — 24/7 write-intensive workloads won't stress the reliability envelope the way they would on a prosumer or NAS-class SSD. Budget accordingly: performance-tier enterprise SSDs carry premium pricing versus capacity-tier alternatives.

Deployment Considerations:

• Verify your ThinkSystem server's storage controller explicitly supports SAS 12Gb/s hot-swap before ordering — mixed SAS/SATA backplanes in some ThinkSystem configurations have slot-specific limitations that aren't always obvious in the chassis spec sheet.
• At 400GB, this is a hot-data tier drive, not a bulk storage solution. If you're evaluating it for video retention storage rather than database or metadata use, the cost-per-GB math will push you toward a higher-capacity option — evaluate your IOPS requirement first and size capacity around it, not the other way around.

The 7N47A00124 fits best in ThinkSystem server deployments running latency-sensitive databases or VDI environments where sub-100 µs I/O consistency determines user experience — not bulk media storage or backup targets where capacity-per-dollar is the primary driver.