使用 Azure 專用主機保留來節省成本Save costs with Azure Dedicated Host reservations

當您認可至 Azure 專用主機的保留實例時,您可以節省成本。When you commit to a reserved instance of Azure Dedicated Hosts, you can save money. 保留折扣會自動套用至符合保留範圍和屬性的執行中專用主機數目。The reservation discount is applied automatically to the number of running dedicated hosts that match the reservation scope and attributes. 您不需要將保留指派給專用主機來取得折扣。You don't need to assign a reservation to a dedicated host to get the discounts. 購買的保留實例僅涵蓋您使用量的計算部分,並包含軟體授權成本。A reserved instance purchase covers only the compute part of your usage and does include software licensing costs. 請參閱 虛擬機器的 Azure 專用主機總覽See the Overview of Azure Dedicated Hosts for virtual machines.

購買之前,請先決定適當的專用主機 SKUDetermine the right dedicated host SKU before you buy

購買保留之前,您應該先判斷您需要的專用主機。Before you buy a reservation, you should determine which dedicated host you need. 定義專用主機的 SKU,代表 VM 系列和類型。A SKU is defined for a dedicated host representing the VM series and type.

一開始請先移至 Windows 虛擬機器Linux 的支援大小來識別 VM 系列。Start by going over the supported sizes for Windows virtual machine or Linux to identify the VM series.

接下來,請檢查 Azure 專用主機是否支援此功能。Next, check whether it is supported on Azure Dedicated Hosts. Azure 專用主機定價 頁面具有專用主機 sku 的完整清單、其 CPU 資訊,以及各種定價選項 (包括保留的實例) 。Azure Dedicated Hosts pricing page has the complete list of dedicated hosts SKUs, their CPU information, and various pricing options (including reserved instances).

您可能會發現數個 Sku 支援您選取的 VM 系列 (具有不同類型) 。You may find several SKUs supporting your selected VM series (with different Types). 藉由比較主機 (數目個 vcpu) 的容量來識別最佳 SKU。Identify the best SKU by comparing the capacity of the host (number of vCPUs). 請注意,您可以將保留套用至多個支援相同 VM 系列的專用主機 Sku (例如 DSv3_Type1 和 DSv3_Type2) ,但不能跨不同的 VM 系列 (例如 DSv3 和 ESv3) 。Note that you will be able to apply your reservation to multiple dedicated hosts SKUs supporting the same VM series (for example DSv3_Type1 and DSv3_Type2) but not across different VM series (like DSv3 and ESv3).

購買限制考慮Purchase restriction considerations

保留實例適用于大部分的專用主機大小,但有一些例外狀況。Reserved instances are available for most dedicated host sizes, with some exceptions.

保留折扣不適用於下列各項:Reservation discounts don't apply for the following:

  • 雲端保留不適用於德國或中國區域 中的購買Clouds - Reservations aren't available for purchase in Germany or China regions.

  • 配額不足 -具有單一訂用帳戶範圍的保留,必須在新的保留實例的訂用帳戶中有可用的 vCPU 配額。Insufficient quota - A reservation that is scoped to a single subscription must have vCPU quota available in the subscription for the new reserved instance. 例如,如果目標訂用帳戶的配額限制為10個 vcpu (DSv3 系列),則您無法購買支援此系列的保留專用主機。For example, if the target subscription has a quota limit of 10 vCPUs for DSv3-Series, then you can't buy a reservation dedicated hosts supporting this series. 保留的配額檢查包含已在訂用帳戶中部署的 Vm 和專用主機。The quota check for reservations includes the VMs and dedicated hosts already deployed in the subscription. 您可以 建立配額增加要求 以解決此問題。You can create quota increase request to resolve this issue.

  • 容量限制 -在罕見的情況下,Azure 會限制購買專用主機 sku 子集的新保留,因為區域中的低容量。Capacity restrictions - In rare circumstances, Azure limits the purchase of new reservations for subset of dedicated host SKUs, because of low capacity in a region.

購買保留項目Buy a reservation

您可以在 Azure 入口網站中購買 Azure 專用主機實例的保留實例。You can buy a reserved instance of an Azure Dedicated Host instance in the Azure portal.

保留的付款方式可為預先付款或每月付款Pay for the reservation up front or with monthly payments. 這些需求適用于購買保留的專用主機實例:These requirements apply to buying a reserved Dedicated Host instance:

  • 您必須是至少一個 EA 訂用帳戶的擁有者角色,或具有隨用隨付費率的訂用帳戶。You must be in an Owner role for at least one EA subscription or a subscription with a pay-as-you-go rate.

  • 若為 EA 訂用帳戶,必須在 ea 入口網站中啟用 [新增保留實例] 選項。For EA subscriptions, the Add Reserved Instances option must be enabled in the EA portal. 或者,如果該設定已停用,則您必須是訂用帳戶的 EA 管理員。Or, if that setting is disabled, you must be an EA Admin for the subscription.

  • 針對雲端解決方案提供者 (CSP) 程式,只有系統管理員代表或銷售代表可以購買保留項目。For the Cloud Solution Provider (CSP) program, only the admin agents or sales agents can buy reservations.

購買執行個體:To buy an instance:

  1. 登入 Azure 入口網站Sign in to the Azure portal.

  2. 選取 [所有服務] > [保留]。Select All services > Reservations.

  3. 選取 [ 新增 ] 以購買新的保留,然後按一下 [ 專用主機]。Select Add to purchase a new reservation and then click Dedicated Hosts.

  4. 輸入必要欄位。Enter required fields. 執行符合您選取之屬性的專用主機實例符合取得保留折扣的資格。Running Dedicated Hosts instances that match the attributes you select qualify to get the reservation discount. 取得折扣的專用主機實例實際數目取決於所選的範圍和數量。The actual number of your Dedicated Host instances that get the discount depend on the scope and quantity selected.

如果您有 EA 合約,可以使用 [ 新增更多] 選項 來快速新增額外的實例。If you have an EA agreement, you can use the Add more option to quickly add additional instances. 此選項不適用於其他訂用帳戶類型。The option isn't available for other subscription types.

欄位Field 說明Description
訂用帳戶Subscription 用來支付保留項目的訂用帳戶。The subscription used to pay for the reservation. 保留項目的費用會透過訂用帳戶的付款方式收取。The payment method on the subscription is charged the costs for the reservation. 訂用帳戶類型必須是 enterprise 合約 (供應專案號碼: MS-AZR-0003P->ms-azr-0017p 或 MS-AZR-0003P-Ms-azr-0148p) 或 Microsoft 客戶合約,或是採用隨用隨付費率的個別訂用帳戶 (供應專案號碼: MS-MS-AZR-0003P-Ms-azr-0003p 或 MS-MS-AZR-0003P-Ms-azr-0023p) 。The subscription type must be an enterprise agreement (offer numbers: MS-AZR-0017P or MS-AZR-0148P) or Microsoft Customer Agreement or an individual subscription with pay-as-you-go rates (offer numbers: MS-AZR-0003P or MS-AZR-0023P). 費用會從 Azure 預付款 (先前稱為預付金) 的餘額 (如果有的話) 扣除或作為超額部分收費。The charges are deducted from the Azure Prepayment (previously called monetary commitment) balance, if available, or charged as overage. 針對具有隨用隨付費率的訂用帳戶,費用會以訂用帳戶的信用卡或發票付款方法計費。For a subscription with pay-as-you-go rates, the charges are billed to the credit card or invoice payment method on the subscription.
影響範圍Scope 保留項目範圍可以涵蓋一個訂用帳戶或多個訂用帳戶 (共用範圍)。The reservation’s scope can cover one subscription or multiple subscriptions (shared scope). 如果您選取:If you select:
區域Region 保留項目所涵蓋的 Azure 區域。The Azure region that’s covered by the reservation.
專用主機大小Dedicated Host Size 專用主控制項實例的大小。The size of the Dedicated Host instances.
詞彙Term 一年或三年。One year or three years.
數量Quantity 保留項目內所購買的執行個體數目。The number of instances being purchased within the reservation. Quantity 是可取得帳單折扣的執行中專用主機實例的數目。The quantity is the number of running Dedicated Host instances that can get the billing discount.
  • 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 — 會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 — 會將保留折扣套用至計費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. 若是 EA 客戶,計費內容為註冊。For EA 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.

使用量資料和保留使用率Usage data and reservation utilization

對於獲得保留折扣的使用量,您的使用量資料有效價格會是零。Your usage data has an effective price of zero for the usage that gets a reservation discount. 您可以查看哪個 VM 實例收到每個保留的保留折扣。You can see which VM instance received the reservation discount for each reservation.

如需保留折扣如何出現在使用量資料中的詳細資訊,請參閱如果您是 EA 客戶,請 瞭解您的 Enterprise 註冊的 Azure 保留使用量For more information about how reservation discounts appear in usage data, see Understand Azure reservation usage for your Enterprise enrollment if you are an EA customer. 如果您有個別訂用帳戶,請參閱 瞭解隨用隨付訂用帳戶的 Azure 保留使用量If you have an individual subscription, see Understand Azure reservation usage for your Pay-As-You-Go subscription.

在購買後變更保留Change a reservation after purchase

購買之後,您可以對保留進行下列類型的變更:You can make the following types of changes to a reservation after purchase:

  • 更新保留範圍Update reservation scope

  • 實例大小彈性 ((如果適用)) Instance size flexibility (if applicable)

  • 擁有權Ownership

您也可以將保留分割成較小的區塊,併合並已分割的保留。You can also split a reservation into smaller chunks and merge already split reservations. 這些變更都不會造成新的商業交易或變更保留的結束日期。None of the changes cause a new commercial transaction or change the end date of the reservation.

您無法在購買後直接進行下列類型的變更:You can't make the following types of changes after purchase, directly:

  • 現有的保留區域An existing reservation’s region

  • SKUSKU

  • 數量Quantity

  • 持續時間Duration

但是,如果您想要進行變更,您可以 交換 保留。However, you can exchange a reservation if you want to make changes.

取消、交換保留或進行退費Cancel, exchange, or refund reservations

您可以取消、交換保留或進行退費,但有某些限制。You can cancel, exchange, or refund reservations with certain limitations. 如需詳細資訊,請參閱 Azure 保留的自助式交換和退費For more information, see Self-service exchanges and refunds for Azure Reservations.

需要協助嗎?Need help? 與我們連絡。Contact us.

如果您有問題或需要協助,請建立支援要求If you have questions or need help, create a support request.

後續步驟Next steps

若要了解如何管理保留項目,請參閱管理 Azure 保留項目To learn how to manage a reservation, see Manage Azure Reservations.

若要深入了解 Azure 保留項目,請參閱下列文章:To learn more about Azure Reservations, see the following articles: