Storage Tier Arbitrage

Storage Tier Arbitrage is the practice of splitting a client warehouse into a hot analytical layer and a cold object layer, then pricing the engagement against the blended cost rather than the hot-tier cost alone. Agencies care because warehouse spend is usually the largest pass-through line in an analytics retainer, and the spread between tiers is where margin either survives or evaporates. A concrete shape: keep query-heavy marts in a columnar engine such as ClickHouse for millisecond dashboards, while landing raw history in flat-rate object storage like Wasabi or Backblaze B2 at $6.95/TB/month with no egress fees, so a client pulling 40TB of archives does not generate a surprise bill. The trade-off is operational: two systems mean two sets of access controls, retention rules, and failure modes, and someone on the delivery team owns the boundary. Scope the tier split before the retainer is signed, not after the first overage dispute.