IBM TotalStorage DS6000 Series - Manual (Page 87)

Chapter 3. RAS 63
progress using the DS Management Console GUI. Clearly a multipathing driver (such as
SDD) is required for this process to be concurrent.
There is also the alternative to load code non-concurrently. This means that both controllers
are unavailable for a short period of time. This method can be performed in a smaller window
of time.
3.7 Summary
This chapter has described the RAS characteristics of the DS6000. These characteristics
combine to make the DS6000 a world leader in reliability, availability, and serviceability.