Choosing a RAID level for a storage server
Eight 12 TB drives give you 96 TB raw and four sensible ways to arrange them. What each level costs in capacity, what it buys in redundancy, and how long a rebuild really takes.
Guide e materiale di riferimento per gestire server su una rete senza limiti di traffico — configurazione, capacità, trasferimenti e le domande a cui i nostri ingegneri rispondono più spesso. Gli articoli sono pubblicati in inglese.
Eight 12 TB drives give you 96 TB raw and four sensible ways to arrange them. What each level costs in capacity, what it buys in redundancy, and how long a rebuild really takes.
Port tiers are sold in Gbps, but workloads arrive in viewers, backup windows and downloads per hour. The arithmetic that turns one into the other, with no rounding in our favour.
Every dedicated machine ships with out-of-band access, so a reinstall is yours to run at 3 a.m. without a ticket. The order of operations, and the three places it usually goes wrong.
The first fifteen minutes after handover: a real user account, key-only SSH, a firewall that defaults to closed, and updates that install themselves.
Measure what your server is actually delivering, and raise the kernel defaults that cap a multi-gigabit link before you blame the network.