[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-09 (世界標準時間)。"],[],[],null,["# About Cloud TPU reservations\n============================\n\nThis document explains how to reserve Cloud TPUs for your exclusive use by\nrequesting one of the following:\n\n- A [future reservation for up to 90 days (in calendar mode)](/tpu/docs/calendar-mode-reservation)\n- A [future reservation for one year or longer with a committed use discount](/tpu/docs/long-term-reservation)\n\nReservations are useful for the following cases:\n\n- Planned or unplanned usage spikes\n- Obtaining high-demand resources\n- Long-running training jobs and inference workloads\n- Workloads requiring a high assurance of capacity\n\nA reservation is one consumption option for Cloud TPU. For more information,\nsee [Cloud TPU consumption options](/tpu/docs/consumption-options).\n\nChoose a reservation type\n-------------------------\n\nCloud TPU offers two types of reservations: future reservations for up to 90\ndays, which you request using calendar mode, and future reservations for one\nyear or longer, which require a committed use discount (CUD). Both reservation\ntypes give you a high level of assurance that TPUs are available when you need\nthem, for a specified time period. The following table shows the differences\nbetween the reservation types:\n\nWhat's next\n-----------\n\n- [Request a future reservation for up to 90 days in calendar mode](/tpu/docs/calendar-mode-reservation)\n- [Request a future reservation for one year or longer](/tpu/docs/long-term-reservation)\n- [Share a reservation between projects](/tpu/docs/share-reservation)\n- After your reservation start date, [consume the reservation](/tpu/docs/consume-reservation)"]]
