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H19-338_V3.0 · Question #176

Which of the following statements about HyperGeoEC Is correct in OceanStor Pacific series?

The correct answer is A. At least 2 sites are required. HyperGeoEC (Geographic Erasure Coding) in OceanStor Pacific distributes erasure-coded data across geographically separated sites, so a minimum of 2 sites is required to enable the cross-site data protection that defines the feature - option A is correct. Option B is wrong…

Huawei Storage Product Features and Portfolio

Question

Which of the following statements about HyperGeoEC Is correct in OceanStor Pacific series?

Options

  • AAt least 2 sites are required
  • Bonly one site is in active state
  • COne data copy is maintained between multiple sites
  • DTolerates the failure of up to 3 sites

How the community answered

(28 responses)
  • A
    82% (23)
  • B
    11% (3)
  • C
    4% (1)
  • D
    4% (1)

Explanation

HyperGeoEC (Geographic Erasure Coding) in OceanStor Pacific distributes erasure-coded data across geographically separated sites, so a minimum of 2 sites is required to enable the cross-site data protection that defines the feature - option A is correct. Option B is wrong because HyperGeoEC supports an active-active architecture, meaning multiple sites serve I/O simultaneously rather than only one being active. Option C is wrong because erasure coding does not maintain a single data copy; instead, it splits data into chunks and generates parity fragments distributed across sites, which is fundamentally different from replication. Option D is wrong because the number of site failures tolerated depends on the specific EC schema configured (such as the ratio of data to parity chunks), and there is no universal guarantee of tolerating up to 3 site failures.

Memory tip: Link "Geo" in HyperGeoEC to geography - you cannot span geography with fewer than 2 locations, making "at least 2 sites" the logical baseline requirement.

Topics

#HyperGeoEC#OceanStor Pacific#geo-redundancy#site failure tolerance

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