Which two expansion trays are supported on Hitachi Unified Storage (HUS) model 110? (Choose two.)

Question

Options

• A2U tray to hold up to 24 SFF drives
• B2U tray to hold up to 12 LFF drives
• C4U tray to hold up to 48 LFF drives
• D4U tray to hold up to 38 SFF drives

Explanation

Options A and B are correct - the HUS 110 supports a 2U tray holding up to 24 SFF (Small Form Factor/2.5") drives and a 2U tray holding up to 12 LFF (Large Form Factor/3.5") drives. These two tray types reflect the physical reality of drive sizing: smaller 2.5" SFF drives pack more densely (24 per 2U), while larger 3.5" LFF drives occupy more space (12 per 2U). Option C is wrong because HUS 110 does not use a 4U LFF tray - 4U enclosures belong to higher-capacity or different product lines. Option D is wrong because a 4U tray holding 38 SFF drives is not a supported HUS 110 configuration and the drive count is oddly specific/non-standard.

Memory tip: Think "HUS 110 keeps it in 2U" - both supported trays are 2U. If an answer says 4U for the HUS 110, it's a distractor. Then use the density rule: SFF = more drives (24), LFF = fewer drives (12) in the same rack height.

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