Pick Faces vs Reserve Storage: Getting the Split Right
Direct answer: Pick faces hold what a picker reaches in a short cycle; reserve storage holds the replenishment behind it. Getting the ratio right matters more than total capacity: too many faces wastes cube on slow movers, too few means constant replenishment and stockouts at the face.
Two jobs, one rack
Pick faces exist for speed: goods at waist height, short travel, fast replenishment cycles. Reserve storage exists for density: full pallets stacked high, touched rarely. The same rack structure serves both, but the slotting logic differs.
A common rule of thumb starts from demand: fast movers earn more pick faces, slow movers consolidate into reserve. The real constraint is replenishment labour — every extra pick face means more fork moves per shift.
Sizing in practice
Count the picks per SKU per week, then divide by the picks one pallet position supports before it runs dry. That quotient tells you how many ground positions a SKU justifies; everything else goes to reserve.
Review the split seasonally. Demand drift moves SKUs between bands, and a layout tuned two years ago often carries dead pick faces that crowd out current fast movers.
Pick face sizing: rule-of-thumb ratios
| Warehouse profile | Typical pick : reserve split | Reasoning |
|---|---|---|
| Distribution / wholesale, few large orders | 1 : 5 to 1 : 10 | Replenishment in bulk; picking is not the constraint |
| E-commerce, many small orders, high SKU count | 1 : 1 to 1 : 3 | Every SKU needs a reachable face; reserve is thin |
| Manufacturing line feed | 1 : 3 to 1 : 6 | Line-side faces must hold a shift or a day of consumption |
| Seasonal business with a peak | 1 : 4 to 1 : 8, with convertible reserve | Reserve absorbs the peak; faces stay stable |
FAQ
How many pick faces per SKU?
Usually one or two for fast movers; more only when a single pallet empties before a shift ends.
Should pick faces be full pallets?
No — the pick face holds pallets but picking happens from them; case-pick operations use different levels or carton flow.
How often to re-slot?
A light review quarterly, a full pass annually or after any major assortment change.
All figures above refer to standard product data sheets; final confirmation is subject to written quotation.