Options for IBM Storage and POWER9
Almost three decades ago, back in 1997, IBM announced the flagship 9337 Disk Array Subsystem, a rack-mount disk unit that offers 1,084 MB to 33.55 GB of DASD for the AS/400 9406 Models B, D, E, and F as well as AS/400 Advanced System Model. Back in the early ’80s, I engaged in a benchmark of the 9337 Disk Subsystem on an enterprise AS/400 against the EMC Symmetric system in Rochester, Minnesota. I also presented RAID technology at a local user group meeting, explaining how to protect the data on the 9337 storage for the AS/400 with RAID 5 technology.
We have come a long way in storage for the Power System. In addition to internal hard disk drives (HDDs), there are Solid State Drives (SSDs), Non-Volatile Memory express (NVMe) drives, and the external IBM FlashSystems with all NVMe storage option. Gone are the days when AS/400 internal storage was usually the first choice in achieving the best performance. This blog discusses various IBM storage options for POWER9 and highlights the cost difference of deploying different storage options on a FlashSystem fiber attached to a POWER9.