alt Hacker NewsThis is what baffles me - 2.5gbps.
I want smaller, cooler, quieter, but isn’t the key attribute of SSDs their speed? A raid array of SSDs can surely achieve vastly better than 2.5gbps.
Replies
jauntywundrkind • last Friday at 10:15 PM
Even if the throughput isn't high, it sure is nice having the instant response time & amazing random access performance of a ssd.
2TB ssd are super cheap. But most systems don't have the expandability to add a bunch of them. So I fully get the incentive here, being able to add multiple drives. Even if you're not reaping additional speed.
jrockway • last Friday at 8:09 PM
2.5Gbps is selected for price reasons. Not only is the NIC cheap, but so is the networking hardware.
But yeah, if you want fast storage just stick the SSD in your workstation, not on a mini PC hanging off your 2.5Gbps network.
A single SSD can (or at least NVMe can). You have to question whether or not you need it -- what are you doing that you would go line-speed a large portion of time that the time savings are worth it. Or it's just a toy, totally cool too.
4 7200 RPM HDDs in RAID 5 (like WD Red Pro) can saturate a 1Gbps link at ~110MBps over SMB 3. But that comes with the heat and potential reliability issues of spinning disks.
I have seen consumer SSDs, namely Samsung 8xx EVO drives have significant latency issues in a RAID config where saturating the drives caused 1+ second latency. This was on Windows Server 2019 using either a SAS controller or JBOD + Storage Spaces. Replacing the drives with used Intel drives resolved the issue.