What does left-right double arrow icon located between 0b1 and 0b2 on E4000 mean? Last updated Save as PDF Share Share Tweet Share Views:10Visibility:PublicVotes:0Category:e-series-systemsSpecialty:esgLast Updated: Applies to E-Series E4000 Answer The left-right double arrow icon located between 0b1 and 0b2 on E4000 means that the ports provide redundant paths. Additional Information TR-5001: Introduction to NetApp E-Series E4000 arrays