Applicable Products
- QuTS hero h5.3.0 or later
- High Availability Manager
- Storage Manager
Scenario
While using QNAP NAS with high availability (HA) enable, I received a system warning indicating an SSD cache issue. One or more cache disks are reported as degraded or crashed. How can I repair or replace the faulty disks without interrupting ongoing services?
Procedure
Before you begin, please do the following:
- Back up important data.
Always back up your data before performing disk operations to mitigate the risk of data loss. - Identify the faulty SSD(s).
- Go to Storage Manager > Disks > Disk.
- Identify the SSDs with “Cache” listed under the column header Usage Type.
- Identify the SSDs with “Error” or “Warning” listed under the column header Status.
- Determine whether hot-swapping is supported for the drive bays/slots where your faulty SSDs are installed.
Tip
- 3.5-inch or 2.5-inch drive bays usually support hot-swapping.
- Drive slots that require access to the system board (such as M.2) usually do not support hot-swapping.
- To determine hot-swapping support for drive bays/slots on your specific model, download and check the hardware user guide for your model in Download Center.
- Follow the relevant instructions depending on whether hot-swapping is supported:
Case 1: Hot-swapping supported
- Replace the faulty disk.
- Remove the faulty disk.
- Install a healthy disk of the same or larger capacity in the same slot.
The system automatically detects the new disk.
- If the SSD cache is degraded, the system will automatically start rebuilding the cache RAID.
Note
If the system does not automatically start rebuilding, try setting the new disk as a spare disk to trigger the rebuild process.
- If the SSD cache crashed, manually remove and recreate the SSD cache.
- Go to Storage Manager > Cache Acceleration.
- Remove the SSD cache.
For details, see Removing the SSD cache.
The system automatically flushes cached data back to the storage pool. - Recreate the SSD cache.
For details, see Creating the SSD cache.
Case 2: Hot-swapping not supported
- If the faulty disk is on the active node, switch the node role to passive node by performing a switchover.
If the faulty disk is on the passive node, skip to the next step.- Go to High Availability Manager > Cluster.
- Click Manage, and then select Switch Over.
The original active node becomes the passive node.
- Shut down the passive node.
- Go to High Availability Manager > Nodes.
- Identify the passive node.
- Click
, and then select Shut Down.
- Replace the faulty disk.
- Remove the faulty disk.
- Install a healthy disk of the same or larger capacity in the same slot.
- Power on the passive node.
After the passive node starts, it automatically rejoins the HA cluster. - Switch the passive node’s role to active node.
SSD cache is managed by the active node. To repair the SSD cache, the host NAS must be in the active node role. - Go to High Availability Manager > Cluster.
- Click Manage, and then select Switch Over.
The passive node is now the active node.
- If the SSD cache is degraded, the system will automatically start rebuilding the cache RAID.
Note
If the system does not automatically start rebuilding, try setting the new disk as a spare disk to trigger the rebuild process.
- If the SSD cache crashed, manually remove and recreate the SSD cache.
- Go to Storage Manager > Cache Acceleration.
- Remove the SSD cache.
For details, see Removing the SSD cache.
The system automatically flushes cached data back to the storage pool. - Recreate the SSD cache.
For details, see Creating the SSD cache.
Tip
After replacing a disk, we recommended performing a switchover to ensure that the switchover/failover mechanism works properly and that HA functionality has been restored.
Further Reading
適用產品
- QuTS hero h5.3.0 or later
- High Availability Manager
- Storage Manager
情境
使用 QNAP NAS 並啟用 高可用性 (HA) 時,我收到系統警告,指示 SSD 快取問題。一或多個快取磁碟被報告為降級或損毀。如何在不中斷正在進行的服務的情況下修復或更換故障磁碟?
程式
開始之前,請執行以下操作:
- 備份重要資料。
在執行磁碟操作之前,請務必備份資料,以降低資料遺失的風險。 - 識別故障 SSD。
- 前往儲存空間 管理器 > 磁碟 > 磁碟.
- 識別在欄位標題下列為「快取」的 SSD使用型別.
- 識別在欄位標題下列為「錯誤」或「警告」的 SSD狀態.
- 確定故障 SSD 所安裝的磁碟槽/插槽是否支援熱抽換。
提示
- 3.5 吋或 2.5 吋磁碟槽通常支援熱抽換。
- 需要系統板存取的插槽(例如 M.2)通常不支援熱抽換。
- 要確定特定型號的磁碟槽/插槽是否支援熱抽換,請下載並查看 下載中心 中的硬體使用指南。
- 根據是否支援熱抽換,遵循相關指示:
案例 1:支援熱抽換
- 更換故障磁碟。
- 移除故障磁碟。
- 在同一插槽中安裝相同或更大容量的健康磁碟。
系統會自動檢測新磁碟。
- 如果 SSD 快取已降級,系統將自動開始重建快取 RAID。
注意
如果系統未自動開始重建,請嘗試將新磁碟設為備用磁碟以觸發重建過程。
- 如果 SSD 快取損毀,請手動移除並重新建立 SSD 快取。
- 前往儲存空間 管理器 > 快取加速.
- 移除 SSD 快取。
詳細資訊,請參閱 移除 SSD 快取。
系統會自動將快取資料刷新回 儲存空間 池。 - 重新建立 SSD 快取。
詳細資訊,請參閱 建立 SSD 快取。
案例 2:不支援熱抽換
- 如果故障磁碟位於主動節點,請透過執行切換將節點角色切換為被動節點。
如果故障磁碟位於被動節點,請跳至下一步。- 前往 High Availability Manager > 叢集。
- 按一下 管理,然後選擇 切換。
原本的主動節點變為被動節點。
- 關閉被動節點。
- 前往High Availability Manager > 節點.
- 識別被動節點。
- 按一下
, 然後選擇關閉.
- 更換故障磁碟。
- 移除故障磁碟。
- 在相同插槽中安裝相同或更大容量的健康磁碟。
- 開啟被動節點電源。
被動節點啟動後,會自動重新加入 HA 叢集。 - 將被動節點的角色切換為主動節點。
SSD 快取由主動節點管理。要修復 SSD 快取,主機 NAS 必須處於主動節點角色。 - 前往 High Availability Manager > 叢集。
- 按一下 管理,然後選擇 切換。
被動節點現在是主動節點。
- 如果 SSD 快取降級,系統將自動開始重建快取 RAID。
注意
如果系統未自動開始重建,請嘗試將新磁碟設為備用磁碟以觸發重建過程。
- 如果 SSD 快取崩潰,請手動移除並重新建立 SSD 快取。
- 前往儲存空間 管理員 > 快取加速.
- 移除 SSD 快取。
詳情請參閱 移除 SSD 快取。
系統會自動將快取資料刷新回 儲存空間 池。 - 重新建立 SSD 快取。
詳情請參閱 建立 SSD 快取。
提示
更換磁碟後,我們建議執行切換以確保切換/容錯移轉 機制正常運作並恢復 HA 功能。
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