IBM 59B4 01LU763 EC5J EC7Q 800GB SSD NVMe U.2 Mainstream Module
IBM 59B4 800 GB SSD NVMe U.2 Mainstream adapter is a 7mm, high performance SSD formatted in 4096 byte sectors for IBM Power10 and Power9 Servers running AIX, Linux Server or VIOS workloads, has 01LU763 part number, and may have EC5J or EC7Q feature codes. The IBM 59B4 800 GB SSD NVMe U.2 Mainstream adapter is a fourth generation PCIe solid state drive, can be installed in any U.2 7mm NVMe PCIe Gen4 x 4 interface in the IBM Power Server. The NVMe is a high performance architecture and command protocol that can read/write flash memory. Compared to a SAS or SATA SSD, the IBM NVMe solid state drives provides more read/write IOPS and larger throughput or GB per sec.
IBM 59B4 800 GB solid-state drive is rated at 2.4 DWPD (Drive Writes Per Day) calculated over a 5-year period for 100% random write workloads that are 4K bytes or larger. Use for workloads within this rating are fully supported and will maintain high reliability and MTBF. As with any SSD, the nature of the IBM Power Server workload will greatly impact the maximum write capacity. If a high percentage of more sequentially oriented writes is used instead of random writes, the maximum write capacity will be larger. Writes past the SSD's maximum write capacity will continue to work for some period of time, but perform much more slowly.
Whether the IBM Power Server’s application uses sequential or random reads from the device does not affect the life of the device. A Predictive Failure Analysis message will indicate that it is time to replace the SSD if enabled by the operating system and system administrator. Customers are recommended to monitor SMART log critical information via the appropriate OS utility to observe drive life remaining information. IBM NVMe SSD failures will be replaced during the standard warranty and maintenance period for SSD's that have not reached the maximum number of write cycles. SSD's that reach this limit may fail to operate according to specifications and must be replaced at the client's expense. Boot supported. Data redundancy on a failed SSD may be provided by OS mirroring or software RAID wherever applicable.