Backup Exec 22.1 管理指南

調整案例

對於以下案例，可能需要在 o365_settings.conf 檔案中調整預設參數。如果新值有效，則可以將其保留用於後續工作。

此檔案的預設路徑為：

C:\Program Files\Veritas\Backup Exec\SCFPlugins\O365\o365_settings.conf

在下次備份中，選取備份期間受到流量管制的項目。確保在沒有其他使用者存取信箱時進行備份。減少請求數並增加重試次數有助於減少錯誤。

可以減少以下參數：

# Number of threads for enumerating folder items during backup.
Microsoft recommended value. (minimum - 2, maximum - 5) 
#backup_sync_requests = 5

# Number of threads for backing up items.
(minimum - 2, maximum - 15) 
#backup_download_requests = 5

# Number of items to download per request
during backup (minimum - 5, maximum - 100) 
backup_items_per_download_request = 80 

可以增加以下參數：

# Number of retries when requests fail
during backup (minimum - 0, maximum - 10) 
#backup_retries_for_requests = 5

項目可能會失敗並顯示以下錯誤：

檔案終止或無輸入：訊息傳輸中斷或逾時 (最大復原延遲 300 秒) (最大傳送延遲 300 秒)。

可能的失敗原因：

請在連線 Exchange Online 服務時檢查是否存在任何網路問題。變更以下值有助於解決逾時錯誤。

可以減少以下參數：

# Minimum number of items to download per request
to fallback to on network timeout errors
during backup (minimum - 1, maximum - 20) 
#backup_min_items_per_download_request = 5 
# Maximum total size of all items to download
per request during backup (minimum - 1, maximum - 500) 
#backup_max_size_per_download_request_mb = 20 

可以增加以下參數：

# Network send timeout for requests sent
during backup (minimum - 0, maximum - 300) 
#backup_gsoap_send_timeout_secs = 300 
# Network receive timeout for requests sent
during backup (minimum - 0, maximum - 300) 
#backup_gsoap_recv_timeout_secs = 300

對於失敗的項目，必須選擇性地針對要還原的項目執行還原。為避免任何新還原因流量管制而失敗，請務必在以下情況下進行還原：沒有其他使用者正在存取旨在進行還原的信箱或這些信箱沒有作用中的備份。

減少請求數並增加重試次數有助於減少錯誤。

可以減少以下參數：

# Maximum number of items to upload
in a single request during restore (minimum - 1, maximum - 200) 
#restore_max_items_per_upload_batch = 100 
# Maximum total size of all items to upload per request
during restore (minimum - 1, maximum - 50) 
#restore_max_payload_per_batch_mb = 5 
# Number of threads to upload items
during restore (minimum - 1, maximum - 10) 
#restore_max_item_upload_tasks = 3  
# Maximum number of items to verify in a single request
during restore (minimum - 1, maximum - 200) 
#restore_max_items_per_verification_batch = 50 
# Number of threads to verify items
during restore (minimum - 1, maximum - 10) 
#restore_max_item_verification_tasks = 2  

可以增加以下參數：

# Number of retries when requests fail
during restore (minimum - 0, maximum - 10) 
#restore_max_retries = 5

從 Exchange Online 停用 EWS 節流後，變更以下設定可提高備份速度。

可以增加以下參數

# Number of threads for enumerating folder items during backup.
Microsoft recommended value. (minimum - 2, maximum - 5) 
#backup_sync_requests = 5 
# Number of threads for backing up items. (minimum - 2, maximum - 15) 
#backup_download_requests = 5  
# Number of items to download per request
during backup (minimum - 5, maximum - 100) 
backup_items_per_download_request = 80 
# Maximum total size of all items to download per request
during backup (minimum - 1, maximum - 500) 
#backup_max_size_per_download_request_mb = 20 
# Maximum total size of all items (downloaded and across all
outstanding requests) during backup 
#backup_max_total_items_download_size_mb = 100
(minimum - 10, maximum - 2000)

從 Exchange Online 停用 EWS 節流後，變更以下設定可提高還原速度。

可以增加以下參數：

# Maximum number of items to upload in a
single request during restore (minimum - 1, maximum - 200) 
#restore_max_items_per_upload_batch = 100 
# Maximum total size of all items to upload per request
during restore (minimum - 1, maximum - 50) 
#restore_max_payload_per_batch_mb = 5 
# Number of threads to upload items during restore
(minimum - 1, maximum - 10) 
#restore_max_item_upload_tasks = 3  
# Maximum number of items to verify in a single request
during restore (minimum - 1, maximum - 200) 
#restore_max_items_per_verification_batch = 50 
# Number of threads to verify items during restore
(minimum - 1, maximum - 10) 
#restore_max_item_verification_tasks = 2