Azure Files at scale: 100 TiB shares, Premium IOPS formulas, burst credits, per-file limits, and metadata IOPS ceilings most capacity planning misses entirely.
Azure Files Scale Limits Performance How Azure Files Handles Large-Scale Enterprise Data "How big can a share get" and "how fast can a share go" are two genuinely different questions with two genuinely different sets of limits — and a third question, "how fast can one file go," has its own separate ceiling entirely, one that stays fixed no matter how large or well-provisioned the share around it is. The two scale dimensions this guide separates precisely Every pay-as-you-go Azure file share can grow to 100 TiB today — this used to require explicitly opting into a "large file share" feature; it's now the default for current storage accounts, though a real trade-off still exists for legacy accounts still on the older setting. A single file inside a share is capped at 1 TiB, 1,000 IOPS, and 60 MiB/s, regardless of how large or fast the share itself is provisioned. Share-level scale and file-level scale are genuinely separate ceilings — hitting...