Vantaggi
Great atmosphere for where I worked (Oakland and San francisco Data centers which were former 365 Main properties). Favorable people to work with, and very Life first-focused attitude. Clear, documented procedures make for knowing what needs to be done, when to do it, and how to. Easy commutes (both of my facilities were nearby public transit). Plenty of room for advancement. Direct Management does a great job listening to their employees. I always knew I had my bosses support because of very reasonable and achievable expectations. Company-paid education - a doze of us took an online course, all paid for by DLR which also included the cost of the certification (Network+ and A+ certs).
Svantaggi
DLR, like any company that swallows other companies, has the challenge of streamlining policies to fit what I believe was successful for 365 Main. They didn't have a job for me when I moved to the other side of the country (but I can hardly fault you for not having a place for me).