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PolarDB for MySQL uses shared distributed storage and supports dual-zone deployment by default. How many data replicas are available across the two zones?
Suggested Answer: D
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12 comments · newest first
OL
Olen
2 months ago
I’m leaning towards C) 5. More replicas mean better availability.
FE
Felicidad
3 months ago
I feel like it's A) 3. Less complexity, more efficiency.
IR
Irma
3 months ago
I think the answer is B) 4. It makes sense for redundancy.
PA
Pamella
3 months ago
Definitely 3, that's how it works!
JO
Joni
3 months ago
I've always thought it was 5, but I guess not!
NA
Nana
3 months ago
Wait, are we sure it's not 4?
QU
Quentin
3 months ago
Totally agree, 3 is the right answer!
LE
Leonora
4 months ago
It's 3 replicas across the two zones!
NO
Novella
4 months ago
If I recall correctly, I think there are 4 replicas across the two zones, but I might be mixing it up with another database system.
QU
Queenie
4 months ago
I vaguely recall that dual-zone setups often have a minimum of 3 replicas, but I can't remember the exact number for PolarDB.
RE
Reita
4 months ago
I feel like I practiced a similar question, and I think it was either 4 or 6 replicas.
ST
Stephaine
4 months ago
I think I remember something about data replicas in distributed systems, but I'm not sure how many PolarDB uses.