Product Description
1.Product Overview
01YM541 is a high-performance, high durability enterprise NVMe solid-state drive designed specifically for the FlashSystem series of all flash storage arrays. This hard drive is a dedicated component of the 01YM589 2U 12 bay NVMe expansion enclosure, used to significantly enhance the overall capacity and performance of the storage system. It’s hardware core adopts PM1723B enterprise grade disk body and integrates deeply customized firmware, ensuring seamless integration, optimal performance, and highest reliability with storage hardware and software ecosystems.
2. Core specification parameters
Project Specification Description
Brand and Model: IBM
Part Number (FRU) 01YM541
Compatible with expansion shelf 01YM589 2U NVMe Expansion Enclosure
Disk model Samsung PM1723B
Interface Protocol NVMe 1.3
Physical interface 2.5-inch U.2 (SFF-8639)
Capacity 15.36 TB
NAND flash memory type 3D TLC (Triple Level Cell) NAND
Key features include extremely high durability, NVMe dual ports, and enterprise level QoS
3. Performance characteristics
Excellent performance: With NVMe over PCIe architecture, it provides bandwidth and extremely low latency far beyond traditional SAS and SATA SSDs, effectively meeting the needs of data intensive applications.
Sequential read speed: up to 6500 MB/s
Sequential write speed: up to 4000 MB/s level
Random read and write IOPS: up to millions, providing excellent transaction processing capabilities
Ultimate durability: Optimized for 7x24 hours of uninterrupted heavy write workloads, it is its core selling point.
DWPD (daily full disk write count): up to 10 (within the 5-year warranty period, the entire hard drive capacity can be fully written 10 times per day)
TBW (lifetime write byte count): up to 28000 TBW, ensuring long-term investment returns
Consistency and QoS: Provide stable IOPS and latency performance to ensure quality of service (QoS) for critical business applications.
4. Core Technologies and Functions
NVMe dual port access: Supports Active Active dual controller redundant access. This is the cornerstone of achieving enterprise level high availability (HA), allowing two independent storage controllers to access the same hard drive simultaneously, ensuring uninterrupted business continuity in the event of any component (path, controller) failure.
Advanced power outage protection: Equipped with a complete power outage protection (PLP) mechanism, using a dedicated capacitor array to provide temporary power in case of unexpected power outage, all cached data is submitted to non-volatile NAND flash memory, fundamentally eliminating the risk of data loss.
End to end data integrity: From the host interface to the NAND medium, data path protection, cyclic redundancy check (CRC), and advanced error correction code (ECC) mechanisms are used throughout the process to ensure accurate and error free data.
Enterprise level management functionality: Fully supports NVMe Management Interface (NVMe MI) and S.M.A.R.T. logs, seamlessly integrated into Storage Insights and FlashSystem management interfaces, enabling predictive analysis, health status monitoring, and automated operations.
5. Application scenarios and compatibility
Main application: This hard drive is a designated option for IBM FlashSystem 5x00, 7x00, 9x00 series storage arrays, designed for expanding storage capacity and performance, especially suitable for:
Enterprise Core Database (SAP HANA, Oracle Exadata, IBM Db2)
Virtualization and Private Cloud Platforms (VMware HANA, Microsoft Hyper-V)
Artificial Intelligence and Machine Learning (AI/ML) Data Lake
High Performance Computing (HPC) and Financial Transaction Analysis
Compatibility: This hard drive is designed as a dedicated component for the 01YM589 2U NVMe expansion chassis. The 01YM589 expansion rack is connected to the supported FlashSystem control head through fiber channel (FC) or SAS cables. This hard drive is dedicated to the storage system and is not compatible with third-party servers or general-purpose JBOD chassis.
6. Management and maintenance
As part of the entire FlashSystem storage solution, this hard drive is configured, monitored, and maintained through a unified management platform.
Firmware updates are regularly released by IBM and seamlessly and rollably executed through the management interface without the need for downtime.
Supports hot swapping, can be replaced during system operation, and has a maintenance window of zero.




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