Any idea what went wrong? Obviously supply chain issues (as with anyone who relies on China), but is that the only reason, or has the business landscape changed too?
Sometimes that can mean a last-ditch effort to save a company because its financials are fucked, but sometimes it's to buy time to adjust to a changing debt market, or to clean house in advance of a major corporate restructuring or something.
Aside from knowledge of the market fundamentals or deep research on the particular company, signs that a Chapter 11 means something is wrong include: heavy sale of core assets under 363; multiple bankruptcy plans not being approved; or transitioning to Chapter 7.
At least one person is claiming that this is just a re-organization and that the company plans to continue operations after bankruptcy: https://www.reddit.com/r/drobo/comments/vp34dl/if_your_drobo...