什麼是 Azure 保留項目?What are Azure Reservations?

Azure 保留可協助您藉由認可一年或三年的虛擬機器、SQL Database 計算容量、Azure Cosmos DB 輸送量或其他 Azure 資源來節省成本。Azure Reservations help you save money by committing to one-year or three-years of virtual machines, SQL Database compute capacity, Azure Cosmos DB throughput, or other Azure resources. 認可哥讓您取得所使用資源的折扣。Committing allows you to get a discount on the resources you use. 與隨用隨付價格相比,Reservations 可以大幅降低虛擬機器、SQL 資料庫計算、Azure Cosmos DB 或其他資源的成本,最高可達 72%。Reservations can significantly reduce your virtual machine, SQL database compute, Azure Cosmos DB, or other resource costs up to 72% on pay-as-you-go prices. 保留會提供計費折扣,且不會影響資源的執行階段狀態。Reservations provide a billing discount and don't affect the runtime state of your resources.

您可以支付預先或每月的保留期。You can pay for a reservation up front or monthly. 預付前和每月保留的總成本是相同的,當您選擇按月支付時,您不需要支付任何額外費用。The total cost of up-front and monthly reservations is the same and you don't pay any extra fees when you choose to pay monthly. 每月付款僅適用于 Azure 保留,而不是協力廠商產品。Monthly payment is available for Azure reservations, not third party products.

您可以在 Azure 入口網站購買保留。You can buy a reservation in the Azure portal.

為何要購買保留?Why buy a reservation?

如果您有長時間執行的虛擬機器、Azure Cosmos DB 或 SQL 資料庫,則購買保留可提供您最符合成本效益的選項。If you have virtual machines, Azure Cosmos DB, or SQL databases that run for long periods of time, buying a reservation gives you the most cost-effective option. 例如,當您連續執行服務的四個實例時,如果沒有保留,則會以隨用隨付費率計費。For example, when you continuously run four instances of a service without a reservation, you're charged at pay-as-you-go rates. 當您為這些資源購買保留時,您會立即取得保留折扣。When you buy a reservation for those resources, you immediately get the reservation discount. 那些資源將不再以隨用隨付費率計費。The resources are no longer charged at the pay-as-you-go rates.

保留所涵蓋的費用Charges covered by reservation

服務方案:Service plans:

  • 保留的虛擬機器實例-保留僅涵蓋虛擬機器計算成本。Reserved Virtual Machine Instance - A reservation only covers the virtual machine compute costs. 它不會涵蓋其他軟體、網路或儲存體費用。It doesn't cover additional software, networking, or storage charges.
  • Azure Cosmos DB 保留容量-保留會涵蓋為您的資源布建的輸送量。Azure Cosmos DB reserved capacity - A reservation covers throughput provisioned for your resources. 它未涵蓋儲存體和網路費用。It doesn't cover the storage and networking charges.
  • SQL Database 保留 vCore -保留中只會包含計算成本。SQL Database reserved vCore - Only the compute costs are included with a reservation. 授權為分開計費。The license is billed separately.
  • SQL 資料倉儲-保留會涵蓋 cDWU 的使用方式。SQL Data Warehouse - A reservation covers cDWU usage. 它不會涵蓋與 SQL 資料倉儲使用量相關聯的儲存體或網路費用。It doesn't cover storage or networking charges associated with the SQL Data Warehouse usage.
  • App Service 戳記費用-保留區涵蓋戳記使用方式。App Service stamp fee - A reservation covers stamp usage. 它不會套用至背景工作,因此與戳記相關聯的任何其他資源也會分開計費。It doesn't apply to workers, so any other resources associated with the stamp are charged separately.

針對 Windows 虛擬機器和 SQL 資料庫,您可以利用 Azure Hybrid Benefit 來涵蓋授權成本。For Windows virtual machines and SQL Database, you can cover the licensing costs with Azure Hybrid Benefit.

誰有資格購買保留?Who's eligible to purchase a reservation?

若要購買方案,您必須擁有企業中的訂用帳戶擁有者角色(MS-AZR-0017P-Ms-azr-0017p 或 MS-MS-AZR-0017P-Ms-azr-0148p)或隨用隨付訂用帳戶(MS-MS-AZR-0017P-Ms-azr-0003p 或 MS-MS-AZR-0017P-Ms-azr-0023p)。To buy a plan, you must have a subscription owner role in an Enterprise (MS-AZR-0017P or MS-AZR-0148P) or Pay-As-You-Go subscription (MS-AZR-0003P or MS-AZR-0023P). 雲端解決方案提供者可以使用 Azure 入口網站或 合作夥伴中心 來購買 Azure 保留。Cloud solution providers can use the Azure portal or Partner Center to purchase Azure Reservations.

Enterprise 合約(EA)客戶可以停用 EA 入口網站中的 [新增保留實例] 選項,以限制對 EA 管理員的購買。Enterprise Agreement (EA) customers can limit purchases to EA admins by disabling the Add Reserved Instances option in the EA Portal. EA 系統管理員必須是至少一個 EA 訂用帳戶的訂用帳戶擁有者,才能購買保留。EA admins must be a subscription owner for at least one EA subscription to purchase a reservation. 當企業想要讓集中的小組購買不同成本中心的保留時,此選項非常有用。The option is useful for enterprises that want a centralized team to purchase reservations for different cost centers. 購買之後,集中式小組可以將成本中心擁有者新增至保留區。After the purchase, centralized teams can add cost center owners to the reservations. 然後,擁有者可以將保留範圍限定在其訂用帳戶。Owners can then scope the reservation to their subscriptions. 中央小組不需要擁有購買保留的訂用帳戶擁有者存取權。The central team doesn't need to have subscription owner access where the reservation is purchased.

保留折扣僅適用于與透過企業、雲端解決方案提供者(CSP)購買的訂用帳戶相關聯的資源,以及隨用隨付費率的個別方案。A reservation discount only applies to resources associated with subscriptions purchased through Enterprise, Cloud Solution Provider (CSP), and individual plans with pay-as-you-go rates.

範圍保留Scope reservations

您可以將保留範圍限定于訂用帳戶或資源群組。You can scope a reservation to a subscription or resource groups. 設定保留區的範圍會選取保留節約的適用位置。Setting the scope for a reservation selects where the reservation savings apply. 當您將保留範圍限定于資源群組時,保留折扣僅適用于資源群組,而不會套用到整個訂用帳戶。When you scope the reservation to a resource group, reservation discounts apply only to the resource group — not the entire subscription.

保留範圍選項Reservation scoping options

使用資源群組範圍時,您有三個選項可界定保留範圍,視您的需求而定:With resource group scoping you have three options to scope a reservation, depending on your needs:

  • 單一資源群組範圍—只會將保留折扣套用至所選資源群組中的相符資源。Single resource group scope — Applies the reservation discount to the matching resources in the selected resource group only.
  • 單一訂用帳戶範圍-將保留折扣套用至所選訂用帳戶中的相符資源。Single subscription scope — Applies the reservation discount to the matching resources in the selected subscription.
  • 共用範圍-將保留折扣套用至帳單內容中合格訂用帳戶的相符資源。Shared scope — Applies the reservation discount to matching resources in eligible subscriptions that are in the billing context. 針對 Enterprise 合約客戶,計費內容為註冊。For Enterprise Agreement customers, the billing context is the enrollment. 針對使用隨用隨付費率的個別訂用帳戶,計費範圍是由帳戶管理員所建立的所有合格訂用帳戶。For individual subscriptions with pay-as-you-go rates, the billing scope is all eligible subscriptions created by the account administrator.

在您的使用量上套用保留折扣時,Azure 會依照下列連續處理保留:While applying reservation discounts on your usage, Azure processes the reservation in the following order:

  1. 範圍設定為資源群組的保留Reservations that are scoped to a resource group
  2. 單一範圍保留Single scope reservations
  3. 共用範圍保留Shared scope reservations

單一資源群組可以根據您的保留範圍,從多個保留區取得保留折扣。A single resource group can get reservation discounts from multiple reservations, depending on how you scope your reservations.

將保留範圍限定于資源群組Scope a reservation to a resource group

當您購買保留時,您可以將保留範圍限定在資源群組中,或在購買後設定範圍。You can scope the reservation to a resource group when you buy the reservation, or you set the scope after purchase. 您必須是訂用帳戶擁有者,才能將保留範圍限定于資源群組。You must be a subscription owner to scope the reservation to a resource group.

若要設定範圍,請移至 Azure 入口網站中的 [購買保留] 頁面。To set the scope, go to the Purchase reservation page in the Azure portal. 選取您想要購買的保留類型。Select the reservation type that you want to buy. 在 [選取您要購買的產品選擇] 表單上,將 [範圍] 值變更為 [單一資源群組]。On the Select the product that you want to purchase selection form, change the Scope value to Single resource group. 然後,選取資源群組。Then, select a resource group.

顯示 VM 保留購買選擇的範例

系統會顯示虛擬機器保留中資源群組的購買建議。Purchase recommendations for the resource group in the virtual machine reservation are shown. 建議是藉由分析過去30天的使用量來計算。Recommendations are calculated by analyzing your usage over the last 30 days. 如果使用保留實例執行資源的成本比使用隨用隨付費率的資源成本更低,則會進行購買建議。A purchase recommendation is made if the cost of running resources with reserved instances is cheaper than the cost of running resources with pay-as-you-go rates. 如需保留購買建議的詳細資訊,請參閱根據使用模式取得保留實例購買建議For more information about reservation purchase recommendations, see Get Reserved Instance purchase recommendations based on usage pattern.

購買保留之後,您就可以隨時更新範圍。You can always update the scope after you buy a reservation. 若要這麼做,請移至保留區 ,按一下 [ 設定],然後 rescope 保留。To do so, go to the reservation, click Configuration, and rescope the reservation. Rescoping 保留不是商業交易。Rescoping a reservation isn't a commercial transaction. 您的保留期限不會變更。Your reservation term isn't changed. 如需有關更新範圍的詳細資訊,請參閱在購買保留之後更新範圍For more information about updating the scope, see Update the scope after you purchase a reservation.

顯示保留範圍變更的範例

監視和優化保留使用方式Monitor and optimize reservation usage

您可以透過多種方式來監視保留使用量,方法是 Azure 入口網站、透過 Api,或透過使用資料。You can monitor your reservation usage in multiple ways – through Azure portal, through APIs, or through usage data. 若要查看您有權存取的所有保留專案,請移至 Azure 入口網站中的 [保留]。To see all the reservations that you have access to, go to Reservations in the Azure portal. [保留] 方格會顯示保留的最後記錄使用率百分比。The reservations grid shows the last recorded utilization percentage for the reservation. 按一下 [保留],以查看保留的長期使用方式。Click the reservation to see long-term utilization of the reservation.

如果您是 enterprise 合約的客戶,您也可以使用api使用量資料來取得保留使用量。You can also get reservation utilization using APIs and from your usage data if you are an enterprise agreement customer.

如果您注意到資源群組範圍的保留使用量很低,則可以將保留範圍更新為單一訂用帳戶,或在帳單內容中共用。If you notice that the utilization of your resource group scoped reservation is low, then you can update the reservation scope to single subscription or share it across the billing context. 您也可以分割保留區,並將產生的保留專案套用至不同的資源群組。You can also split the reservation and apply the resulting reservations to different resource groups.

其他考量Other considerations

如果您的資源群組中沒有相符的資源,保留的使用量將會過低。If you don't have matching resources in a resource group, then the reservation will be underutilized. 保留不會自動套用至使用率低的不同資源群組或訂用帳戶。The reservation doesn't automatically apply to a different resource group or subscription where there's low utilization.

如果您將資源群組從一個訂用帳戶移到另一個,則保留範圍不會自動更新。A reservation scope doesn't automatically update if you move the resource group from one subscription to another. 如果您刪除資源群組,則範圍不會更新。The scope doesn't update if you delete the resource group. 您將必須rescope 保留You will have to rescope the reservation. 否則,保留專案將會使用量過低。Otherwise, the reservation will be underutilized.

折扣的訂用帳戶和供應專案類型Discounted subscription and offer types

保留折扣適用於下列合格訂用帳戶和供應項目類型。Reservation discounts apply to the following eligible subscriptions and offer types.

  • Enterprise 合約 (供應項目號碼:MS-AZR-0017P 或 MS-AZR-0148 P)Enterprise agreement (offer numbers: MS-AZR-0017P or MS-AZR-0148P)
  • 以隨用隨付費率計費的個別方案 (供應項目號碼:MS-AZR-0003P 或 MS-AZR-0023P)Individual plans with pay-as-you-go rates (offer numbers: MS-AZR-0003P or MS-AZR-0023P)
  • CSP 訂用帳戶CSP subscriptions

在具有其他優惠類型的訂用帳戶中執行的資源,將無法收到保留折扣。Resources that run in a subscription with other offer types don't receive the reservation discount.

保留的計費方式為何?How is a reservation billed?

保留會計費至與訂用帳戶繫結的付款方式。The reservation is charged to the payment method tied to the subscription. 如果您有 Enterprise 訂用帳戶,保留成本是從您的預付餘額扣除。If you have an Enterprise subscription, the reservation cost is deducted from your monetary commitment balance. 當您的承諾用量餘額未涵蓋保留的成本時,就會向您收取超額部分的費用。When your monetary commitment balance doesn't cover the cost of the reservation, you're billed the overage. 如果您有來自個別方案的訂用帳戶與隨用隨付費率,您的帳戶所擁有的信用卡會立即收取預付費用。If you have a subscription from an individual plan with pay-as-you-go rates, the credit card you have on your account is billed immediately for up-front purchases. 每月付款會出現在您的發票上,而您的信用卡會按月計費。Monthly payments appear on your invoice and your credit card is charged monthly. 當您按發票計費時,您會看到下一張發票的費用。When you're billed by invoice, you see the charges on your next invoice.

保留折扣的套用方式How reservation discount is applied

保留折扣適用于符合您購買保留時所選屬性的資源使用量。The reservation discount applies to the resource usage matching the attributes you select when you buy the reservation. 屬性包含符合的 Vm、SQL 資料庫、Azure Cosmos DB 或其他資源執行所在的範圍。Attributes include the scope where the matching VMs, SQL databases, Azure Cosmos DB, or other resources run. 例如,如果您想要在美國西部區域的四個標準 D2 虛擬機器保留折扣,請選取 Vm 執行所在的訂用帳戶。For example, if you want a reservation discount for four Standard D2 virtual machines in the West US region, then select the subscription where the VMs are running.

保留折扣是「使用或遺失-it」。A reservation discount is "use-it-or-lose-it". 如果您沒有任何小時的相符資源,則會遺失該小時的保留數量。If you don't have matching resources for any hour, then you lose a reservation quantity for that hour. 您無法繼續執行未使用的保留時數。You can't carry forward unused reserved hours.

當您關閉資源時,保留折扣會自動套用至指定範圍中的另一個相符資源。When you shut down a resource, the reservation discount automatically applies to another matching resource in the specified scope. 如果在指定的範圍內找不到相符的資源,則保留的時數會遺失If no matching resources are found in the specified scope, then the reserved hours are lost.

例如,您稍後可能會建立資源,並具有使用量過低的對應保留。For example, you might later create a resource and have a matching reservation that is underutilized. 保留折扣會自動套用至新的相符資源。The reservation discount automatically applies to the new matching resource.

如果虛擬機器是在註冊/帳戶內的不同訂用帳戶中執行,則選取共用的範圍。If the virtual machines are running in different subscriptions within your enrollment/account, then select the scope as shared. 共用的範圍可讓保留折扣套用到整個訂用帳戶。Shared scope allows the reservation discount to be applied across subscriptions. 您可以在購買保留之後變更範圍。You can change the scope after you buy a reservation. 如需詳細資訊,請參閱管理 Azure 保留For more information, see Manage Azure Reservations.

保留折扣僅適用于與企業、CSP 或使用隨用隨付費率之訂用帳戶相關聯的資源。A reservation discount only applies to resources associated with Enterprise, CSP, or subscriptions with pay-as-you go rates. 在具有其他優惠類型的訂用帳戶中執行的資源,將無法收到保留折扣。Resources that run in a subscription with other offer types don't receive the reservation discount.

當保留期限到期時When the reservation term expires

在保留期限結束時,計費折扣會到期。At the end of the reservation term, the billing discount expires. 虛擬機器、SQL database、Azure Cosmos DB 或其他資源會以隨用隨付價格計費。The virtual machine, SQL database, Azure Cosmos DB, or other resource is billed at the pay-as-you go price. Azure 保留不會自動續約。Azure Reservations don't automatically renew. 若要繼續獲得計費折扣,您必須針對符合資格的服務和軟體購買新的保留。To continue getting the billing discount, you must buy a new reservation for eligible services and software.

折扣適用于不同大小Discount applies to different sizes

當您購買保留時,折扣可適用於屬性在相同大小群組內的其他執行個體。When you buy a reservation, the discount can apply to other instances with attributes that are within the same size group. 這項功能稱為實例大小彈性。This feature is known as instance size flexibility. 折扣涵蓋範圍的彈性取決於您購買保留時所挑選的保留類型和屬性。The flexibility of the discount coverage depends on the type of reservation and the attributes you pick when you buy the reservation.

服務方案:Service plans:

保留通知Reservation notifications

根據您支付 Azure 訂用帳戶的方式而定,我們會以電子郵件將保留通知寄給組織中的下列使用者。Depending on how you pay for your Azure subscription, we email reservation notifications to the following users in your organization. 系統會針對各種事件傳送通知,包括:Notifications are sent for various events including:

  • 購買Purchase
  • 即將到期的保留期限Upcoming reservation expiration
  • 到期日Expiry
  • 更新Renewal
  • 取消Cancellation
  • 範圍變更Scope change

針對具有 EA 訂用帳戶的客戶:For customers with EA subscriptions:

  • 購買通知會傳送給買方和 EA 通知連絡人。A purchase notification is sent to the purchaser and the EA notification contacts.
  • 其他保留週期通知只會傳送到 EA 通知連絡人。Other reservation lifecycle notifications are sent only to the EA notification contacts.
  • 使用 RBAC (IAM)許可權新增至保留的使用者,不會收到任何電子郵件通知。Users added to a reservation using RBAC (IAM) permission don't receive any email notifications.

針對具有個別訂閱的客戶:For customers with individual subscriptions:

  • 購買者會收到購買通知。The purchaser receives a purchase notification.
  • 在購買時,訂閱帳單帳戶擁有者會收到購買通知。At the time of purchase, the subscription billing account owner receives a purchase notification.
  • 帳戶擁有者會接收所有其他通知。The account owner receives all other notifications.

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後續步驟Next steps