IO500 metadata score (kIOPS, geometric mean of mdtest/find phases), production list as of ISC26: WEKA Samsung SSC-24 (ISC25, 291 nodes) vs best Lustre (Helma, ISC25, 186 nodes) vs best DDN EXAScaler (HiPerGator, SC25, 10 nodes)
~2.75M vs ~1.6M vs ~0.94Mobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | Separate submissions, not a controlled comparison: hardware, client counts, tuning and submission year all differ. DAOS (Aurora, SC23, 300 nodes) scores about 103M on the same list. Normalize per client, per node and per dollar on your own file-size mix before using it to choose. |
| As of | 2026-06 |
| Source | IO500 ISC26 Production List · Production list, MD (kIOPS) column: Samsung SSC-24 (WekaIO), Helma (MEGWARE/Lustre), HiPerGator (DDN/EXAScaler) |
| Review | checking…review by 2026-12-31 · standard cadence |
| Recorded changes | last 2026-10-05 · 4 revisions tracked |
| Claim id | metadata-iops-weka-vs-a-comparable-ddn-lustre |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.