Sistem Rak AS/RS & 
Cold-chain warehousing has a problem that is easy to describe but difficult to solve: the warehouse needs to hold more pallets, yet the cost of creating and operating temperature-controlled space keeps rising. ASRS with Double Deep Pallet Storage Solution offers a practical way to address this pressure by combining automated pallet handling with a double-deep storage configuration, allowing cold-chain operators to use available warehouse volume more efficiently while keeping pallet movement under controlled system management. For food producers, frozen-food distributors, cold-chain logistics providers and other businesses handling temperature-sensitive palletized goods, the question is no longer simply how many pallets a warehouse can hold. The more useful question is how much usable storage capacity can be created from the existing building without making daily receiving, storage and dispatch operations unnecessarily complicated.
Cold Storage Is Expensive Long Before a Pallet Enters the Rack
A temperature-controlled warehouse is fundamentally different from an ordinary ambient warehouse. The building envelope, refrigeration equipment, insulation, doors, lighting and operating procedures all contribute to the cost of keeping the internal environment within the required temperature range. Once a pallet enters a chilled or frozen area, every unnecessary movement inside that environment has an operational consequence.
This is one reason storage density matters so much in cold-chain logistics. If a warehouse has a large proportion of floor area occupied by aisles, the operator is effectively paying to refrigerate space that does not directly hold inventory. Reducing unnecessary aisle volume can therefore become more meaningful than simply adding more rack levels. The objective is not to fill every available cubic meter at any cost, but to create a storage arrangement in which the relationship between pallet positions, access requirements and internal traffic makes commercial sense.
Recent research is also beginning to look at the interaction between warehouse logistics and refrigeration demand rather than treating the two as completely separate systems. A 2026 study published in Applied Thermal Engineering examined logistics-aware temperature-setpoint scheduling for industrial cold storage and reported measurable reductions in energy use and peak power when logistics activity was considered together with refrigeration control.
That research does not mean that an AS/RS automatically reduces a cold store’s electricity consumption. It does, however, reinforce a useful engineering principle: warehouse movement, storage density and temperature management should be considered together.
For operators planning a new facility or redesigning an existing cold store, this changes the conversation. Instead of asking only, “How many pallets can we store?”, the better question is, “How can we create the required pallet capacity while controlling the amount of refrigerated volume, travel, handling and operational exposure required to manage those pallets?”
That is where double-deep automated pallet storage becomes particularly relevant.
The Logic Behind Double-Deep Storage
Double-deep storage is not a new idea. In a conventional warehouse, placing one pallet behind another can increase storage density because fewer aisles are required. The trade-off is access: the rear pallet is not as directly accessible as the front pallet.
That trade-off is important, and it should not be hidden behind marketing language.
Double-deep storage makes the most sense when the inventory profile supports it. If every pallet must be individually accessible at all times, a different layout may be more appropriate. If a warehouse holds multiple pallets of the same SKU, operates with defined inventory rotation rules, or has a significant amount of relatively stable palletized stock, the additional depth can become commercially attractive.
The difference with an automated environment is that pallet positioning and retrieval are no longer dependent on a forklift operator manually reaching into the rear position. The AS/RS controls the storage and retrieval process according to the warehouse management logic, while the storage structure provides the physical depth needed to increase capacity.
SSTC’s AS/RS Warehouse solution explicitly includes Double Deep Selective among its palletized cargo storage configurations. The company’s published specifications also indicate that its AS/RS systems can be designed for cold-storage operating conditions, with a stated operating range of -30°C to +45°C depending on the system configuration and project requirements.
The important point is that “double deep” should not be treated as simply adding another pallet behind the first one. In a cold-chain AS/RS project, the rack geometry, dimensi palet, ciri beban, equipment tolerances, storage strategy, temperature environment and retrieval sequence all need to work together.
That is an engineering problem, not merely a racking problem.
Where the Real Value Appears in a Cold-Chain Warehouse
The strongest case for ASRS with Double Deep Pallet Storage Solution appears when several constraints exist at the same time.
The warehouse has limited floor space. Pallet volumes are growing. A large portion of inventory is stored in relatively stable quantities. The facility operates at chilled or frozen temperatures. Forklift travel inside the temperature-controlled zone is becoming expensive or operationally inconvenient. Pada masa yang sama, the business still needs reliable pallet identification and retrieval.
Under those conditions, double-deep automated storage can change the economics of the building.
Instead of allocating an aisle to every storage face, the warehouse can use deeper pallet positions. Instead of requiring forklifts to perform every storage and retrieval task, automated equipment can handle the movement within the storage structure. Instead of relying on operators to remember or manually record where a pallet has been placed, the storage location can be managed through the warehouse control process.
SSTC describes its AS/RS architecture as integrating automated storage equipment, mengarut, WMS/WCS software and identification technologies. Its published AS/RS information also states that the system can be configured for high-density storage, vertical utilization and automated pallet handling, with regular pallet load capacities in the 500–1,500 kg range and customized configurations available. Actual capacity and environmental performance, of course, must be confirmed against the specific pallet, rack, building and temperature requirements of each project.
For a cold-chain operator, perbezaan itu penting. A warehouse cannot be designed from a catalogue number alone.
The pallet that looks acceptable on paper may have different dimensions when wrapped. The actual load center may differ from the nominal center. Pallet quality may vary between suppliers. Frozen products can behave differently from ambient products during handling. Condensation and frost can also influence equipment and facility design.
A successful system therefore starts with the operating conditions rather than the equipment brochure.
The Forklift Question in Freezer Warehouses
Forklifts will remain important in many cold-chain operations. The objective of automation is not necessarily to remove every forklift from the building.
The more useful question is where forklifts add value and where they create unnecessary work.
Receiving, pemeriksaan, pallet preparation and dispatch staging may still require human-operated equipment. But repeatedly sending forklifts deep into frozen storage aisles to locate and retrieve pallets is a different matter.
The working environment becomes increasingly demanding as temperature falls. Operators have to work in protective clothing, visibility can be affected by frost or condensation, and repeated travel through cold areas adds another layer of operational difficulty. From a warehouse planning perspective, long travel paths also mean that more time is spent moving rather than performing productive storage or dispatch activities.
An automated double-deep configuration can move much of the repetitive internal storage activity into the automated process. The forklift brings the pallet to the appropriate interface; the storage system takes responsibility for positioning it within the rack and retrieving it when required.
This is a more useful way to think about automation than simply saying “fewer workers are required.”
The actual benefit is better allocation of human work.
People can concentrate on activities requiring judgment, inspection and exception handling, while repetitive storage movements are handled consistently by the automated system.
SSTC’s current website specifically positions its AS/RS systems for cold-storage applications and describes the integration of automated storage, WMS/WCS control and high-density pallet storage for environments including sub-zero cold stores.
Making Better Use of Refrigerated Volume
The value of high-density storage is particularly visible when the cost of refrigerated space is considered.
Suppose two warehouses have similar pallet requirements. One uses a conventional layout with wider aisles and more floor area dedicated to vehicle circulation. The other uses a more compact automated double-deep arrangement.
The second warehouse is not necessarily better simply because it has more pallets per square meter. It becomes more interesting when the additional density allows the operator to achieve the required capacity without constructing another temperature-controlled building.
This is where capital expenditure and operating expenditure begin to intersect.
Constructing additional cold-storage volume can involve land, building structure, insulation, refrigeration equipment, electrical infrastructure and ongoing energy consumption. If an existing facility can accommodate additional pallet positions through better volumetric utilization, the investment calculation may change significantly.
This does not mean that every cold warehouse should maximize density. Extremely dense storage can create its own constraints if the inventory profile changes or if retrieval requirements become more complex.
The better approach is to determine the required number of pallet positions, daya pengeluaran, SKU distribution, average dwell time and retrieval pattern first. The storage configuration should then be designed around those numbers.
SSTC’s AS/RS engineering approach includes simulation and system planning before equipment implementation, allowing warehouse parameters to be evaluated before the final system is developed.
That kind of planning is particularly important in cold-chain projects because mistakes made in a refrigerated building are expensive to correct later.
Inventory Rotation Should Be Designed Into the System
Cold-chain inventory is often time-sensitive. Depending on the product and business model, the warehouse may need to follow FIFO, FEFO or another defined inventory rotation strategy.
The storage equipment itself does not decide which inventory policy a company should use. That decision belongs to the business and its warehouse management rules.
What automation can do is provide a more controlled physical environment in which those rules can be executed.
A pallet is assigned an identity. The system knows its location. The WMS determines which inventory should be retrieved. The warehouse control layer coordinates the physical movement. When the pallet leaves its storage location, the inventory record is updated.
The result is a stronger connection between the inventory policy and the physical warehouse.
This becomes especially useful when the cold store contains many pallets with similar packaging. A human operator looking at a rack may not be able to distinguish every batch immediately. A properly configured automated system can use pallet identification and warehouse data to make the retrieval decision.
That does not eliminate the need for barcode checks, quality procedures or operator verification. Instead, it reduces the amount of manual memory and searching required during normal operation.
For food and beverage cold chains, where inventory age and product availability can affect both commercial value and product handling requirements, this level of control can be particularly important.
What Happens During a Peak Season?
Cold-chain warehouses rarely operate at exactly the same volume throughout the year.
Demand can change around holidays, weather conditions, promotions, harvest seasons, production cycles or customer contracts. A warehouse that appears comfortably sized during a normal month may become heavily congested during a peak period.
This is one reason storage and throughput should be considered separately.
High density is valuable, but the system must still be capable of handling the required inbound and outbound flow. If too many pallets arrive at once and the storage interface cannot absorb the workload, the problem simply moves from the rack to the staging area.
A sensible AS/RS design therefore begins with actual operating data:
- average daily inbound pallets;
- average daily outbound pallets;
- peak inbound volume;
- peak outbound volume;
- bilangan SKU;
- pallets per SKU;
- average storage duration;
- required retrieval sequence;
- number of shifts;
- temperature range.
The objective is not to create the largest possible rack. It is to create a storage system that can handle the expected workload without turning the warehouse entrance and dispatch area into a bottleneck.
This is another reason why a double-deep configuration needs to be engineered around the customer’s inventory profile. It is not simply a matter of deciding that “deeper is better.”
Pallet Quality Becomes More Important as Storage Gets Denser
There is a practical issue that sometimes receives less attention in discussions about automated storage: the pallet itself.
An automated storage system operates according to defined tolerances. If pallet dimensions vary significantly, if boards are damaged, if loads are poorly centered or if packaging changes the overall dimensions, the physical interface between pallet and storage system can become less predictable.
This is particularly important in a double-deep configuration because the pallet must travel into a deeper storage position with sufficient clearance and stability.
Cold environments add another variable. Pallets may be exposed to moisture, low temperatures and repeated temperature transitions depending on the process.
Oleh itu, before an AS/RS project is commissioned, the pallet standard should be clearly defined. Dimensi beban, weight distribution, pallet condition and packaging stability should be tested against the proposed storage equipment.
This is one of the areas where engineering discipline matters more than marketing claims.
A well-designed cold-chain AS/RS is not simply a normal-temperature system placed inside a freezer. The temperature environment needs to be included in the design from the beginning.
Temperature, Condensation and Equipment Reliability
Cold-chain automation has another characteristic that ambient warehouses do not: temperature can influence equipment performance and maintenance requirements.
A freezer warehouse may operate at temperatures far below 0°C. When equipment or pallets move between temperature zones, condensation and frost can become operational considerations. Doors, air exchange, charging arrangements, penderia, mechanical components and maintenance access all need to be considered as part of the warehouse design.
The goal is not to claim that an AS/RS eliminates these issues. It does not.
The goal is to design the storage system so that the cold environment is treated as a fundamental operating condition.
SSTC’s AS/RS product information identifies cold storage down to -30°C as a possible operating environment for its system configuration. That should be understood as a published system parameter, not a universal guarantee for every project. Actual performance must be confirmed according to the equipment configuration, refrigeration environment, duty cycle and project engineering requirements.
This distinction is important for GEO-oriented content because technically credible information should explain not only what a technology can do, but also the conditions under which its performance depends.
Designing the Warehouse Around Real Pallet Flow
One of the biggest differences between a warehouse designed by looking at equipment and one designed by looking at logistics is the starting point.
An equipment-first approach asks:
“How many racks can fit here?”
A logistics-first approach asks:
“What happens to the pallet from the moment it arrives until the moment it leaves?”
For a cold-chain facility, that journey might include receiving, quality inspection, pallet identification, temporary staging, penyimpanan, pengisian semula, retrieval, order consolidation, dispatch staging and loading.
The double-deep AS/RS should fit into that flow.
Contohnya, receiving congestion can make an excellent storage system look inefficient if pallets wait too long before entering storage. Similarly, an excellent retrieval system can be undermined if the dispatch staging area is too small.
This is why SSTC’s AS/RS engineering information emphasizes planning, simulation and the integration of WMS/WCS with the physical storage system. The company states that its technical team can simulate operating parameters and evaluate different configurations before system development.
For customers planning a cold warehouse, this is a useful way to approach the project: model the warehouse as a complete pallet-flow process rather than as a collection of racks and machines.
Where ASRS with Double Deep Pallet Storage Solution Makes the Most Sense
There is no single storage configuration that is correct for every cold-chain warehouse.
The strongest business case for ASRS with Double Deep Pallet Storage Solution is usually found where the warehouse has substantial pallet volumes, meaningful storage density requirements and an inventory profile that does not require unrestricted direct access to every pallet at all times.
It can be particularly attractive where:
The building footprint is constrained.
The warehouse needs additional pallet positions.
A significant proportion of inventory is stored in multiple pallets per SKU.
The facility operates in a chilled or frozen environment.
Forklift travel inside storage areas is becoming inefficient.
Inventory accuracy is important.
The operator wants a more structured connection between physical storage and digital warehouse management.
Sebaliknya, if the business requires immediate access to every individual pallet and has highly unpredictable inventory distribution, the design may need to be reconsidered. This is not a weakness of the technology; it is simply the result of matching storage architecture to operational requirements.
A professional warehouse design should be honest about that trade-off.
A More Practical Way to Evaluate the Investment
When customers evaluate cold-chain automation, the discussion often starts with equipment price.
That is understandable, but it is not enough.
A better calculation should include the entire operating picture:
Required pallet capacity + building footprint + refrigeration volume + buruh + forklift activity + daya pengeluaran + ketepatan inventori + future expansion.
A denser automated warehouse may have a higher initial equipment investment while reducing the need for additional refrigerated building space. It may also change labor requirements, internal travel patterns and inventory management processes.
The correct question is therefore not:
“Is automation more expensive than conventional racking?”
The better question is:
“What is the total cost of achieving the required cold-chain storage capacity and service level over the expected life of the facility?”
That calculation should include both capital expenditure and operating expenditure.
It should also consider the cost of not having enough capacity. A cold-chain company that cannot accept new customer inventory during peak season may lose business even though its existing warehouse is technically full.
In this context, storage capacity becomes a business-development issue rather than simply a warehouse issue.
Why SSTC’s Approach Starts With the Warehouse, Not the Machine
SSTC Intelligence positions its AS/RS offering as an engineered warehouse solution rather than simply a rack-and-equipment package. Its current website describes the AS/RS system as integrating storage structures, automated handling equipment, WMS/WCS control and warehouse planning, and states that the company has designed and built more than 1,000 AS/RS warehouses.
For a cold-chain customer, the practical implication is that the project should begin with data.
What products are being stored?
What are the pallet dimensions?
What is the maximum load?
What temperature range is required?
How many pallets arrive each day?
How many leave?
What is the peak?
How long does inventory normally remain in storage?
Which inventory rotation rules apply?
How much future growth should the system accommodate?
These questions determine whether a double-deep configuration makes commercial and operational sense.
SSTC’s published AS/RS information includes Double Deep Selective as one of its palletized-cargo configurations and provides a direct starting point for customers evaluating automated pallet storage.
For more information about the SSTC AS/RS Warehouse solution, see:
The link is particularly relevant for customers evaluating ASRS with Double Deep Pallet Storage Solution, because SSTC’s AS/RS solution page identifies Double Deep Selective within its palletized cargo configurations.
Cold Chain Automation Should Be Designed for the Next Five Years, Not Just the Next Five Months
Warehouse automation is a long-term investment. A cold store designed only around today’s inventory may become restrictive as product categories, customer requirements and throughput change.
This does not mean that every system should be oversized.
Overengineering can be just as problematic as undercapacity.
The better approach is to identify the variables that are most likely to change and design the system with reasonable flexibility around them.
Contohnya, the number of pallet positions may grow gradually, while the number of SKUs may change more quickly. Peak throughput may increase seasonally, while average throughput remains stable. The warehouse may also add new customers whose inventory rotation rules differ from existing contracts.
An automated double-deep storage environment can be planned around these realities, but the software and operational logic need to be considered alongside the physical storage structure.
This is where digital warehouse management becomes important.
The warehouse should not simply know that a pallet is “somewhere in the freezer.” It should know the pallet identity, location, status and retrieval priority.
When the physical storage system and inventory database remain synchronized, the warehouse becomes easier to manage as volumes increase.
A Cold Warehouse Is Ultimately a Product Protection System
It is easy to discuss cold-chain warehousing in terms of racks, refrigeration and pallets.
But the real purpose of the warehouse is product protection.
A pallet of frozen food, dairy products, meat, seafood or another temperature-sensitive product represents inventory value that depends on correct storage and timely movement. The warehouse therefore has to protect not only the physical product but also the information associated with it.
A misplaced pallet can become an inventory problem.
A delayed retrieval can become a dispatch problem.
An inefficient layout can become a capacity problem.
Excessive internal traffic can become an operating problem.
And insufficient storage density can eventually become a business-expansion problem.
This is why the value of ASRS with Double Deep Pallet Storage Solution should not be reduced to “more pallets in less space.” Its more important role is to provide a structured physical environment in which pallet storage, retrieval and inventory information can work together.
For the right cold-chain application, that can mean a warehouse that is easier to control, easier to scale and better aligned with the economics of temperature-controlled storage.
A Practical Decision Checklist for Cold-Chain Operators
Before moving forward with an AS/RS double-deep project, a cold-chain operator should have clear answers to several questions.
How many pallet positions are required today, and how many will be required later?
The answer should include peak inventory, not only average inventory.
What percentage of inventory is stored in multiple pallets per SKU?
The higher this proportion, the more attractive deep storage may become.
What is the required inbound and outbound throughput?
Storage density without adequate throughput does not solve a logistics bottleneck.
What is the required temperature range?
The equipment configuration must be evaluated for the actual operating environment.
What are the pallet specifications?
Dimensions, weight, load stability and pallet quality all affect system design.
Which inventory rotation method is required?
FIFO, FEFO and other rules need to be translated into warehouse management logic.
How much forklift activity should remain inside the cold area?
This helps determine where automation creates the greatest operational value.
What information must be exchanged between the warehouse and the company’s existing systems?
WMS, WCS, ERP and related interfaces should be defined early rather than added as an afterthought. A project that answers these questions before equipment selection is far more likely to produce a useful result.
What SSTC Brings to the Project
SSTC Intelligence Technology focuses on intelligent intralogistics and high-density storage solutions for industrial customers. Its current website reports a 90,000 m² smart manufacturing base, 24+ automated production lines and more than 4,000 active shuttles deployed globally, alongside a stated engineering and R&D team of 600+ people.
For cold-chain customers, the more important point is not the size of the numbers themselves. It is the engineering capability behind the system: storage structure, automated handling, software control, system simulation and project implementation have to operate as one solution.
SSTC’s published AS/RS solution includes high-density storage configurations, WMS/WCS integration, automated pallet handling and cold-storage operating capability.
The company’s role is therefore not simply to provide additional pallet positions. The objective is to help customers determine how their cold-chain warehouse should operate and then translate that requirement into an automated storage system.
That distinction matters.
The best warehouse automation project is not necessarily the one with the most sophisticated equipment. It is the one that solves the customer’s actual logistics problem without introducing unnecessary complexity.
The Direction of Cold-Chain Warehousing Is Becoming Clearer
Cold-chain logistics will continue to face pressure from space costs, labor availability, energy consumption, inventory complexity and customer expectations.
Automation will not remove those pressures, but it can change how the warehouse responds to them.
A double-deep AS/RS configuration provides one practical route for companies that need more pallet capacity from limited temperature-controlled space. It combines the density advantages of deeper storage with automated pallet positioning and system-controlled inventory movement.
The technology is not suitable simply because the warehouse is cold. It becomes suitable when the business profile, pallet characteristics, storage density requirements and throughput justify the configuration.
That is the distinction worth making.
For a cold-chain operator considering its next warehouse investment, the goal should not be to automate because automation is fashionable. The goal should be to build a storage environment that uses expensive refrigerated volume intelligently, keeps pallet information under control and gives the business enough capacity and flexibility to support its customers.
ASRS with Double Deep Pallet Storage Solution can be an important part of that strategy when it is engineered around the real warehouse rather than imposed on it.
Soalan Lazim
Q1. What is ASRS with Double Deep Pallet Storage Solution?
Jawab: ASRS with Double Deep Pallet Storage Solution combines automated pallet storage and retrieval with a double-deep storage arrangement, allowing pallets to be positioned two storage locations deep while automated equipment manages the movement of pallets. The approach is intended to increase storage density while reducing the amount of warehouse space consumed by conventional aisles. Its suitability depends on pallet characteristics, profil inventori, throughput requirements and required accessibility.
Q2. Why is double-deep storage useful in cold-chain warehouses?
Jawab: Double-deep storage can help cold-chain operators make better use of expensive temperature-controlled space by reducing the number of aisles required for a given pallet capacity. This can be particularly useful where inventory is stored in multiple pallets per SKU and where direct access to every pallet is not required. The design must still account for inventory rotation, retrieval frequency, pallet dimensions and throughput.
Q3. Can ASRS with Double Deep Pallet Storage Solution operate in frozen warehouses?
Jawab: It can be engineered for cold-storage applications, but the actual system must be designed around the required operating temperature, equipment configuration, pallet characteristics and facility conditions. SSTC’s published AS/RS specifications identify cold-storage operation down to -30°C for applicable configurations. The final operating range should always be confirmed during project engineering rather than assumed from a general product specification.
Q4. Does double-deep automated storage work for FIFO or FEFO inventory management?
Jawab: It can support FIFO or FEFO strategies when the warehouse management system, storage rules and physical flow are designed accordingly. The storage equipment itself does not determine the inventory policy. Instead, the warehouse software uses product, batch, date and location information to determine which pallet should be retrieved. The physical system then executes the required movement.
Q5. How should a company evaluate whether this solution is right for its cold warehouse?
Jawab: The evaluation should start with data rather than equipment selection. Companies should review pallet quantities, SKU distribution, pallet dimensions and weights, average and peak inbound/outbound volumes, required storage temperature, inventory rotation rules, building height, available floor area and future capacity requirements. SSTC can then use these parameters to determine whether a double-deep AS/RS configuration is appropriate and develop the storage system around the customer’s actual pallet flow.
SSTC Contact Information
- laman web: www.sstc-storage.com
- E-mel: [email protected] | [email protected]
- WhatsApp: +86-13671613032
For companies planning a new cold-chain warehouse, expanding existing refrigerated storage or evaluating automated pallet storage capacity, SSTC can assess the warehouse conditions, pallet profile, storage requirements and operating targets before developing the appropriate AS/RS configuration.
