群晖 synology 218+ 紧急咨询

coolmate

楼主，别听楼上有些说的。

至少双盘，开Raid。免去你多少担忧和烦恼，最有价值的不是硬件，而是你的数据。即使是下载的电影，也不是随便丢了就可以的。群晖都是有无读写一段时间后会自动休眠，可以设置等待时间长短。

sydney_koala

同意楼上，数据无价。RAID还是靠谱的，我家的QNAP双盘，之前图便宜买了两个希捷3.5寸移动硬盘，拆出里面的硬盘用，结果一年就坏了一个。还好有RAID，数据没有丢。现都换成了WD红盘，一切都好。如果考虑到日后扩容，有RAID也会方便很多。

上书房行走

Why RAID Mirroring is Not a Backup Solution
ESET Internet Security
Many user stagger along in darkness believing that because their computers have RAID mirroring, they are protected and don't need to do backups. This is a lie from the depths of perdition, dear brothers and sisters! RAID mirroring is designed to avoid downtime, not as a backup solution. Here are a few reasons why.

One problem with RAID is that it has a very vulnerable SPOF (Single Point of Failure): the RAID controller, which is the device that controls the drives and manages the array. My experience battling the evil forces of computer failure has taught me that RAID controllers are sinister devices that are prone to misbehaving in particularly evil ways. In fact, RAID controllers can -- and often do -- fail in spectacular ways that take all the drives in the array with them simultaneously!

When that happens, it's necessary to rebuild the array from backups. If you foolishly thought that the RAID array was your backup, you will require the services of a data-recovery company, which verily will cost you many dollars, and there will be much weeping and gnashing of teeth.

Another drawback to RAID is that if the system becomes infected with evil viruses, spyware, ransomware, or other malware; or if it suffers any sort of system problems at all, for that matter; those problems will verily be copied simultaneously to both of the drives in the array. Once this happens, you verily will be left with two hard drives that are equally useless because they both have the same problems, and there will be sorrow throughout your land.

Synology RAID failure and why RAID is not a backup

Problem was, all the drives were about the same age, and had experienced the same level of usage.  A RAID rebuild is one the the most taxing things you can do to a hard-drive and sure enough, a second drive died during the rebuild process.

Fortunately I wasn’t completely reliant on RAID as my primary means of ensuring data reliability.  This Synology unit was being backed up to another NAS unit.

Due to two consecutive drive failures (drives were nearing 7 years age) –  I replaced all 5 drive bays, and restored the data once the RAID volume had been re-created.

Morale of the story: RAID is not a backup!  Ensure your critical data has a secondary means of performing a recovery.  If you don’t have a secondary Synology unit – most Synology units interface with cloud-based storage and Amazon Glacier is really cheap!

网上一搜就有很多关于RAID和backup的

RAID的重点在于你的数据使用连贯性，就是一块盘坏了另一块盘接上继续用。减少了宕机停机的时间停顿。

而BACKUP要用群晖提供的BACKUP TOOL比如hyper backup来保存。

简短来说，家用两盘的NAS可以选择不做SHR 不做RAID，选择BASIC，两块硬盘单独工作。一块下载盘，另外一块使用HYPER BACKUP定期备份下载盘。

future2521

群晖可以休眠的很好的。。。经常睡得很香。。。看来还是要上SSD缓存才好。

iamiii

搭车问一下，楼主218+的噪声大吗？

网上查了一下，有人说吵，有人说不吵。求楼主分享。

准备买218+，因为这个型号支持Docker，目前双盘位的只有三个型号支持Docker。

呼呼呼

日常数据达5T的答复：
1. 机器本身如何不提了，看网上评测吧。
2. 硬盘不要选3、4、8T的。 选6T
3. 硬盘品牌选WD 不要选黑盘蓝盘。最次选红盘。如果可能选入门级的企业盘。  ---黑盘性能好，但脆弱易坏！蓝盘有缺陷性能低。红盘性能不一定好，但是比黑盘稳定一点。尽量选RE的企业入门级（不一定买的到）
4. 至少Raid1
5. 有 条件的，额外加一个硬盘直插电脑机箱sata口（如果有）最好。可当成NAS的备份盘  （或直接加第二个NAS ） --- NAS整体损坏无法恢复的经验。
6. 请购买足够多的网线  ：） 而不是无线。
7. 家里清洁做好