NAS3 SSD Upgrade

This week NAS3 got a storage upgrade from 128GB SSD’s to 500GB SSDs. NAS3 is my SSD NAS which is used for hosting virtual machines.

NAS3 has been running with the 128GB SSD’s for many years now. In fact I paid more for the 128GB SSD than I did for the 500GB SSD. However that was exactly my reasoning for waiting so long to upgrade. NAS3 is not intended to be a performance beast since it’s limited to 1Gbps networking. It would literally be a waste to use high end SSDs in this machine.

Choosing an SSD is sometimes a difficult decision. You have to weigh the performance, cost, and endurance (quality) of the drive. Especially so in a NAS or RAID environment where SSD’s “total bytes written” or “TBW” endurance rating will become a factor.

I paid $90/each CDN for five Crucial MX500 500GB 3D NAND SATA 2.5 Inch Internal SSD – CT500MX500SSD1(Z).

I don’t like using a parity RAID with SSD’s because you will wear them out faster, but in this case I simply don’t care. I would rather have a little redundancy with the trade off of a faster wear rate. Considering the old 128GB SSD’s have been running in RAID5 for many years now as well, from my experience it’s not a big issue.

In RAID5 the disks give me 1.81 TB of usable SSD space. Compared to about 477 GB before. So big upgrade in comparison.

This upgrade should last a few years at least. The next storage upgrade for the SSD side will be getting rid of the ancient Thecus N5550’s and replacing them with a Synology NAS. But that’s a future wish-list.

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Disaster strikes as NAS3 crashes

This past weekend we had a power brownout for about 4 hours. This caused my servers to fail-over to battery power. The batteries don’t last long with servers running. I guess something went sour with the automatic shutdown of my NAS3 which is used only for my VMware virtual machines and it did an improper shutdown. The RAID has crashed.

I don’t have anyone to blame other than myself and I knew eventually this day would come. NAS3 was in RAID-0. That means striping with no redundancy. A failed array on RAID-0 typically means total data loss. I take daily backups of this entire NAS nightly so I am aware and prepared for the risk of using striping. That does not mean that it’s a fun time recovering from it.

Adding additional redundancy for blackouts

Currently, one of the hardest things to recover from in my current home-lab environment is a total power blackout. Everything right now is planned & designed around losing certain components like 1 disk, 1 switch/network cable, etc. However when everything is off and I need to bring things back online it’s a painstaking and very manual process. Over time my environment has also become more and more complex. This latest outage has me scratching my head at how to recover faster & simpler from a power blackout.

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