Applicable Products
- QNAP NAS running QTS or QuTS hero
- Models with hot-swappable drive bays
- RAID groups using SSDs (RAID 1, RAID 5, RAID 6, RAID 10, etc.)
Problem Description
One or more SSDs in your RAID storage pool show a "Warning" status, indicating the SSD lifespan has been exhausted (0% life remaining) or S.M.A.R.T. errors have been detected. You want to know:
- Can you safely remove and replace a Warning drive via hot-swap?
- What is the correct procedure?
- What are the risks when multiple SSDs show Warning simultaneously?
Short Answer
Yes — a drive in Warning status can be safely hot-swapped, just like a Failed drive. You can pull the Warning SSD from the bay while the NAS is powered on, insert a new replacement SSD, and the RAID will automatically begin rebuilding. However, you must replace drives one at a time and wait for the rebuild to complete before replacing the next one.
Solution Steps
Before You Begin
- Verify you have a current backup of all data on the RAID group. This is critical, especially when multiple drives are in Warning status.
- Check RAID status: Ensure no other drive in the RAID group is currently in Failed or Rebuilding state.
- Go to Storage & Snapshots → Storage/Snapshot → select the Storage Pool → view the RAID group status.
- Identify the physical location of the Warning drive:
- Go to Storage & Snapshots → Disks/VJBOD → find the Warning SSD → click Locate (the drive LED will blink to help you identify the correct bay).
- Prepare the replacement SSD:
- The new SSD must be equal to or larger than the drive being replaced.
- Ensure the SSD is compatible with your NAS model.
Step-by-Step: Hot-Swap Replacement
Step 1: Remove the Warning SSD
- With the NAS powered on and running, physically pull the Warning SSD out of its drive bay.
- The NAS will emit a beep alert, and the RAID group status will change to Degraded.
- This is expected — RAID 5 can tolerate one missing drive, RAID 6 can tolerate two.
Important: Do NOT shut down the NAS before pulling the drive. Hot-swap must be done while the system is running.
Step 2: Insert the Replacement SSD
- Insert the new SSD into the same drive bay.
- The NAS will automatically detect the new drive.
- The RAID group will begin rebuilding automatically.
Step 3: Monitor the Rebuild
- Go to Storage & Snapshots → Storage/Snapshot → select the Storage Pool.
- The RAID group will show Rebuilding status with a progress percentage.
- Wait for the rebuild to complete fully (100%) before proceeding to replace the next drive.
Warning: Rebuild time depends on the drive size and system load. Do not power off or restart the NAS during rebuild.
Step 4: Repeat for Additional Drives (If Needed)
If you have multiple Warning SSDs to replace:
- Wait until the current rebuild reaches 100% and the RAID status returns to Ready/Normal.
- Only then proceed to replace the next Warning SSD.
- Repeat Steps 1–3 for each drive, one at a time.
After Replacement
- Verify the RAID group status is Ready with all drives showing Good.
- Go to Storage & Snapshots → Disks/VJBOD to confirm all new SSDs are recognized and healthy.
- Run a RAID scrubbing (data consistency check) after all replacements are done:
- Go to Storage & Snapshots → select the RAID group → Manage → RAID Scrubbing.
Critical Risks When Multiple SSDs Are in Warning
| Risk |
Description |
| RAID failure during rebuild |
When a RAID group is rebuilding (degraded state), it has no fault tolerance (for RAID 5) or reduced tolerance (for RAID 6). If another Warning SSD fails completely during rebuild, the entire RAID group will be lost. |
| SSD end-of-life unpredictability |
SSDs at 0% lifespan can fail suddenly and without further warning. The more Warning drives in the group, the higher the risk of a second failure during rebuild. |
| Rebuild stress |
The rebuild process reads all data from the remaining drives intensively, which can accelerate failure of other end-of-life SSDs. |
Risk Mitigation
- Always have a verified backup before starting — this is the single most important precaution.
- Replace drives during low-usage periods to reduce I/O stress on remaining Warning drives during rebuild.
- Replace drives in order of worst health first — start with the SSD showing the most critical S.M.A.R.T. values.
- Consider upgrading RAID level — if you frequently face multiple drive failures, RAID 6 (tolerates 2 drive failures) provides better protection than RAID 5 (tolerates only 1).
Further Reading
适用产品
- QNAP NAS running QTS or QuTS hero
- Models with hot-swappable drive bays
- RAID groups using SSDs (RAID 1, RAID 5, RAID 6, RAID 10, etc.)
问题描述
您的 RAID 存储池中的一个或多个 SSD 显示“警告”状态，表示 SSD 寿命已耗尽（剩余寿命为 0%）或检测到 S.M.A.R.T. 错误。您想知道：
- 您能否通过热插拔安全地移除和更换警告驱动器？
- 正确的操作步骤是什么？
- 当多个 SSD 同时显示警告时，有哪些风险？
简短回答
是的——处于警告状态的驱动器可以像故障驱动器一样安全地进行热插拔。您可以在 NAS 开机时从插槽中拔出警告 SSD，插入新的替换 SSD，RAID 将自动开始重建。但是，您必须一次更换一个驱动器，并在更换下一个之前等待重建完成。
解决步骤
开始之前
- 验证您是否有 RAID 组中所有数据的当前备份。这较为重要，尤其是在多个驱动器处于警告状态时。
- 检查 RAID 状态：确保 RAID 组中没有其他驱动器当前处于故障或重建状态。
- 前往存储与快照总管 → 存储 / 快照 → 选择存储池 → 查看 RAID 组状态。
- 识别警告驱动器的物理位置：
- 前往存储与快照总管 → 磁盘／VJBOD → 找到警告 SSD → 点击定位（驱动器 LED 将闪烁以帮助您识别正确的插槽）。
- 准备替换的 SSD：
- 新 SSD 必须等于或大于被替换的硬盘。
- 确保 SSD 与您的 NAS 型号兼容。
逐步操作：热插拔更换
步骤 1：移除警告 SSD
- 在 NAS 开机并运行的情况下，物理拔出警告 SSD。
- NAS 将发出蜂鸣警报，RAID 组状态将变为降级。
- 这是预期的——RAID 5 可以容忍一个硬盘丢失，RAID 6 可以容忍两个。
重要：在拔出硬盘前不要关闭 NAS。热插拔必须在系统运行时进行。
步骤 2：插入替换 SSD
- 将新 SSD 插入相同的硬盘槽。
- NAS 将自动检测到新硬盘。
- RAID 组将自动开始重建。
步骤 3：监控重建
- 前往存储与快照总管 → 存储 / 快照 → 选择存储池。
- RAID 组将显示重建状态及进度百分比。
- 等待重建完成（100%）后再进行下一个硬盘的更换。
警告：重建时间取决于硬盘大小和系统负载。在重建期间不要关闭或重启 NAS。
步骤 4：如有需要，重复以上步骤
如果您有多个警告 SSD 需要更换：
- 等待当前重建达到 100% 并且 RAID 状态恢复到就绪 / 正常。
- 然后再进行下一个警告 SSD 的更换。
- 对每个驱动器重复步骤 1 -3，一次一个。
更换后
- 验证 RAID 组状态为就绪，所有驱动器显示良好。
- 前往存储与快照总管 → 磁盘／VJBOD，确认所有新的 SSD 已被识别且状态良好。
- 在所有更换完成后运行RAID 清理（数据一致性检查）：
- 前往存储与快照总管 → 选择 RAID 组 → 管理 → RAID 清理。
多个 SSD 处于警告状态时的关键风险
| 风险 |
描述 |
| 重建期间 RAID 失败 |
当 RAID 组正在重建（降级状态）时，对于 RAID 5 没有容错能力，或对于 RAID 6 容错能力降低。如果在重建期间另一个警告 SSD 失效，整个 RAID 组将会丢失。 |
| SSD 寿命终结的不可预测性 |
寿命为 0% 的 SSD 可能会突然失效且没有进一步警告。组中警告驱动器越多，重建期间发生第二次故障的风险越高。 |
| 重建压力 |
重建过程会密集读取剩余驱动器上的所有数据，这可能加速其他寿命终结 SSD 的失效。 |
风险缓解
- 在开始之前始终有经过验证的备份——这是较重要的预防措施。
- 在低使用期更换驱动器，以减少重建期间对剩余警告驱动器的 I / O 压力。
- 按健康状况较差的顺序更换驱动器——从显示较关键 S.M.A.R.T. 值的 SSD 开始。
- 考虑升级 RAID 级别——如果您经常遇到多个驱动器故障，RAID 6（可容忍 2 个驱动器故障）比 RAID 5（仅可容忍 1 个）提供更好的保护。
进一步阅读
