An Overview of Storage Devices - CompTIA A+ 220-901 220-902 Video Training by Prof. Messer
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Optical drives (CD, DVD, BluRay), Hard Drive, Solid State Drives, Hybrid Drives (SSHD), Hot Swap, USB drives, Firewire, SATA, SAS, ATA, SCSI.
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@scottalanmiller What about NVMe and U.2?
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@travisdh1 said in An Overview of Storage Devices - CompTIA A+ 220-901 220-902 Video Training by Prof. Messer:
@scottalanmiller What about NVMe and U.2?
Vid was made in 2015 so....not really widespread at the time.
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And the A+ tends to lag by years as well. So it's both the old A+ that is about to be replaced, and it's A+ material.
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What is the reason for hot swap hard drives? No downtime?
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@mary said in An Overview of Storage Devices - CompTIA A+ 220-901 220-902 Video Training by Prof. Messer:
What is the reason for hot swap hard drives? No downtime?
Basically. It is also a prerequisite to blind swap.
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@mary said in An Overview of Storage Devices - CompTIA A+ 220-901 220-902 Video Training by Prof. Messer:
What is the reason for hot swap hard drives? No downtime?
Yup, same with any hot swap like hot swap fans or whatever. It's so that you can keep a system up and running potentially for decades without going down at all. But mostly so that you can replace parts "right now" in the middle of a production day. No need to shut everything down at peak times just to replace a part.
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What did he mean when he said there's only a limited number or writes on a USB flash drive.
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@connorsoliver said in An Overview of Storage Devices - CompTIA A+ 220-901 220-902 Video Training by Prof. Messer:
What did he mean when he said there's only a limited number or writes on a USB flash drive.
So this is a small mistake on the A+ material. They are making assumptions about the storage media based on the communications protocol. But it's based on very common things. A standard USB flash drive using a flash memory technology that "wears out" as you write to it, but essentially never wears out as you read it.
So the way that a USB stick is "meant to be used" is that you store things on it and read it a lot. You can change it, but it isn't meant for constant writes.
So under "normal" use, USB sticks last a long time. But it you write to it constantly (like when using it as swap) you will cause the memory chip(s) to die quickly.
