deploystorage-chunk.json

{
    "resources": [
        {
            "type": "Microsoft.Resources/deployments",
            "name": "nestedTemplate",
            "apiVersion": "2017-05-10",
            "resourceGroup": "[parameters('RemoteResourceGroup')]",
            "subscriptionId": "[parameters('RemoteSubscriptionId')]",
            "properties": {
                "mode": "Incremental",
                "template": {
                    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
                    "contentVersion": "1.0.0.0",
                    "parameters": {},
                    "variables": {},
                    "resources": [
                        {
                            "type": "Microsoft.Storage/storageAccounts",
                            "name": "[parameters('RemoteStorageAccountName')]",
                            "apiVersion": "2015-06-15",
                            "location": "japanwest",
                            "properties": {
                                "accountType": "Standard_LRS"
                            }
                        }
                    ]
                },
                "parameters": {}
            }
        },
        {
            "type": "Microsoft.Storage/storageAccounts",
            "name": "[parameters('StorageAccountName')]",
            "apiVersion": "2015-06-15",
            "location": "[resourceGroup().location]",
            "properties": {
                "accountType": "Standard_LRS"
            }
        }
    ]
}

deploystorage.json

{
    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "StorageAccountName": {
            "type": "string"
        },
        "RemoteStorageAccountName": {
            "type": "string"
        },
        "RemoteResourceGroup":{
            "type": "string"
        },
        "RemoteSubscriptionId":{
            "type": "string"
        }
    },
    "variables": {},
    "resources": [
        {
            "type": "Microsoft.Resources/deployments",
            "name": "nestedTemplate",
            "apiVersion": "2017-05-10",
            "resourceGroup": "[parameters('RemoteResourceGroup')]",
            "subscriptionId": "[parameters('RemoteSubscriptionId')]",
            "properties": {
                "mode": "Incremental",
                "template": {
                    "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
                    "contentVersion": "1.0.0.0",
                    "parameters": {},
                    "variables": {},
                    "resources": [
                        {
                            "type": "Microsoft.Storage/storageAccounts",
                            "name": "[parameters('RemoteStorageAccountName')]",
                            "apiVersion": "2015-06-15",
                            "location": "japanwest",
                            "properties": {
                                "accountType": "Standard_LRS"
                            }
                        }
                    ]
                },
                "parameters": {}
            }
        },
        {
            "type": "Microsoft.Storage/storageAccounts",
            "name": "[parameters('StorageAccountName')]",
            "apiVersion": "2015-06-15",
            "location": "[resourceGroup().location]",
            "properties": {
                "accountType": "Standard_LRS"
            }
        }
    ]
}