A customer has installed a Hitachi Unified Storage (HUS) system with only port 0A connected to a Linux server. There is a video streaming application running on the server. You have to perform a…

Question

Options

• AThe Linux application will continue to function non-disruptively.
• BThe Linux server will time-out because there is no alternate path.
• CThe firmware update process will abort if the HUS does not have at least 5 seconds of no I/O
• DThe firmware update will fail because the HUS active/active controller feature checks for alternate

• A
  85% (17)
• B
  5% (1)
• D
  10% (2)

Explanation

Option A is correct because Hitachi Unified Storage systems support Non-Disruptive Firmware Update (NDFU) via SNM2 - the update process upgrades each controller sequentially while the other continues handling I/O, maintaining service even with a single-path connection. Option B is wrong because the HUS's NDFU mechanism keeps the path active during the update; the server never loses connectivity long enough to trigger a timeout. Option C is wrong because NDFU is explicitly designed to update while I/O is in flight - no quiesce period is required. Option D is wrong because the active/active controller architecture is precisely what enables non-disruptive updates (it's a feature, not a constraint that blocks single-path configs).

Memory tip: Think of the "N" in NDFU as your anchor - Non-Disruptive means the update was engineered around continuous I/O, so single paths, video streams, and no-quiesce scenarios are all handled by design.

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