alt Hacker NewsHonestly the network-attached storage only ever made sense with HDDs, it's ridiculous to have to pay 10x penalty for both iops and latency just for some "operational flexibility". You get way simpler and much more robust architecture if you just stick to local NVMe and replication -- not that you can forgo one in the (also replicated) network block storage solution anyway...
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dikei • today at 9:55 AM
NAS/SAN still make sense when you need to share storage between multiple DBs for cost efficiency: most application DBs are tiny compared to the size of an SSD.
ngrilly • today at 8:33 AM
Mostly agree, but then you have to take care of replication, failover, and backup. By using a replicated block storage, you can mostly externalize that problem.
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SSD NAS still a lot faster than HDD NAS. And having network-attached storage allows for a lot of cool things. Like you can bind it to kubernetes, so your database instance can easily migrate between nodes while data is kept intact just remounting between nodes. In fact it makes things a lot easier whenever you need to manage persistence. But you're paying big price for it, yeah. Sometimes simplicity worth it. Sometimes you can't afford to lose performance.