How to handle RAID status "Critical"?

[Description]

How to handle RAID status "Critical"?

如何處理磁碟陣列狀態為"危急"的情況?

[Root Cause]

The RAID status shows "Critical" because a faulty HDD is detected in the RAID volume. When the RAID status is "critical", there is no fault tolerance in this volume anymore though it is still recording. Once another HDD becomes faulty, recording will be stopped and all data in this RAID volume will be lost. 

For example, if there is 1 faulty HDD in a RAID 5 volume, the RAID status will show "Critical".

When "Critical" is shown on the status, please replace the faulty HDD immediately.

當有任何屬於磁碟陣列裡的故障硬碟被偵測到時,磁碟陣列的狀態變會顯示成"危急"。當磁碟陣列的狀態顯示"危急"之後,雖然錄影仍舊持續著,磁碟陣列已然不具備任何容錯機制了。在這個前提下,一但又有另一個屬於磁碟陣列裡的故障硬碟被偵測到時,錄影便會中止且原先已經保存在應噹中的所有資料也會一併丟失,再也無法被使用或是復原。

[Solution]

Step 1: Open Internet Explorer, Windows Chrome or Mac Safari and login to the NVR web page.

步驟一:執行網頁瀏覽器(IE、Chrome或是Safari)並登入NVR的網頁。

Step 2: Click RAID & File System / RAID Management then click the Modify tab.

步驟二:按下以便進入磁碟陣列RAID管理頁面,並按下修改頁面。

Step 3: Click on the volume you want to modify. The information of this volume will be displayed under the Modify Volume section

步驟三:按下你想要修改的磁碟區,這個磁碟區的資訊將會被顯示在修改磁碟區分頁。

Step 4: Remove the faulty HDD:
Select the HDD to be removed. Click "Modify" button.

步驟四:移除故障的硬碟:

選取欲移除的硬碟並點擊修改。

Check "Yes, I want to modify this volume box", and click "Yes, modify it" button.

勾選"是,我確定要修改這個磁碟區。",並點擊"是,確定修改"。

Step 5: Remove the faulty HDD from the NVR. Insert a new HDD.

步驟五:將故障的硬碟從NVR移除,並置換另一顆新的硬碟。

Step 6: Go to Modify Volume again, select "Add Disk", and click the Modify button. 

步驟六:重新回到修改磁碟區分頁,點擊"新增硬碟"。

Check "Yes, I want to modify this volume box", and click "Yes, modify it" button.

勾選"是,我確定要修改這個磁碟區。",並點擊"是,確定修改"。

Step 7: The modifying process takes a few hours, depending on the size of disks. Recording won’t stop during the modification, and the video footage of this RAID volume is fully accessible.

步驟七:取決於硬碟的容量大小,磁碟區修改的程序或許要花上數個小時,錄影在磁碟區修改的過程中不會中斷,且已經存在在磁碟陣列裡的錄影檔同樣能夠被存取。

 

Note: This function is designed for replacing a broken hard drive with a new one, instead of modifying RAID level.

NOTE: In the condition of RAID status "critical", it warns the users that one of disks of this RAID volume is faulty. Even though it’s still recording, there is no fault tolerance, and it is highly suggested to replace the faulty HDD.

注意:這個修改磁碟區的功能僅僅提供給你用來將任何故障的硬碟置換成新的硬碟,並不是提供給你用來更改磁碟陣列的格式。

注意:在磁碟陣列狀態顯示成"危急"的情況下,這個訊息主要是用來警告使用者磁碟陣列有一顆硬碟已經故障了。即便是還在錄影,這個磁碟陣列現在已不具備任何容錯的機制了,我們強烈建議你置換這顆故障的硬碟。

 

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