Tech From Alex

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189 reviews & guides.

Bundle of blue Ethernet network cables with exposed twisted pairs plugged into connectors inside a metal equipment rack
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Cat6a

Cat6a (Category 6 Augmented) is the copper Ethernet class built for 10GBASE-T to 100 m, with roughly 500 to 550 MHz bandwidth and tighter alien-crosstalk control than Cat6.

Bundle of blue Ethernet network cables with RJ45 connectors plugged into a switch or patch panel
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10GbE

10GbE is 10 gigabit Ethernet: a wired link that moves about 10 Gbps over copper RJ45 (10GBASE-T), SFP+ fiber, or short DAC twinax, far above gigabit and most 2.5GbE desk runs.

Disassembled solid-state drive showing NAND memory chips and the green circuit board of SSD storage hardware
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DRAM-less

A DRAM-less SSD skips onboard DRAM cache and leans on Host Memory Buffer (HMB) or firmware tricks, which is fine for light use until sustained writes fill the SLC cache and stutter.

Black and gray 3.5-inch internal hard disk drive showing the SATA data and power connector end used in NAS and PC drive bays
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SATA

SATA (Serial ATA) is the everyday interface that connects 2.5/3.5-inch HDDs and SATA SSDs to PCs, NAS bays, and USB docks at up to 6 Gbps.

Rows of dark server racks with drive bays and glowing network cables, the kind of hot-swap tray chassis where disks slide out without powering the whole rack down
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Hot-swap

Hot-swap means you can remove or insert a drive while the chassis stays powered, handy for swapping failed disks, staging archives, and expanding a DAS without a full reboot.

Open 3.5-inch hard disk drive showing platter, spindle, and actuator arm, the physical disks JBOD presents one-by-one
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JBOD

JBOD (“just a bunch of disks”) means each drive shows up as its own volume (no hardware RAID striping or parity), so the host OS or software decides how (or whether) to combine them.