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IBM FlashSystem 5200 vs Pure Storage FlashArray //X20

Side-by-side specifications from the vendors' own documents. The IBM FlashSystem 5200 is a compact 1U all-flash storage system delivering enterprise NVMe performance. The Pure Storage FlashArray //X20 was a 3U enterprise all-NVMe storage array designed to consolidate virtual machines, virtual desktops, and transaction databases.

IBM FlashSystem 5200Pure Storage FlashArray //X20
BrandIBMPure Storage
Statuscurrentend-of-sale
ReleasedFeb 2021May 2018
Form factor1U rack3U rack
Form factor1U rack—
ControllersDual active-active—
Cache memory512GB—
Max drives12 NVMe FCM/SSD in 1U (expands to 748)—
Host interfaces32Gb FC, 25Gb/10Gb iSCSI, NVMe-oF—
Max raw capacity1.7PB in 1U (up to 32PB expanded)—
Controller configuration—Dual active-active controllers in 3U enclosure
Operating system—Pure Storage Purity//FA
Raw capacity—Up to 263TB raw with DirectFlash shelf expansion
Effective capacity—Up to 800TB effective with inline data reduction
Drive media—DirectFlash Modules (4.5TB, 9.1TB, 18.2TB)
Connectivity—16Gb/32Gb FC, 10GbE/25GbE iSCSI, and NVMe-oF (RoCEv2)
Nvram—Dual internal NVRAM modules
Data reduction—Inline deduplication and LZ4/Huffman compression
Management—Pure1 and Purity GUI

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