IBM System Storage Ideas Portal
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Due to processing by IBM, this request was reassigned to have the following updated attributes:
Brand - Servers and Systems Software
Product family - Storage
Product - IBM System Storage SAN Volume Controller (SVC) / Spectrum Virtualize
For recording keeping, the previous attributes were:
Brand - Tivoli
Product family - Storage
Product - IBM System Storage SAN Volume Controller (SVC) / Spectrum Virtualize
To extract a quote from my Clients CTO / Strategy & Planning Director on this need.. "The whole point of dynamic LUN expansion is to make the dynamic ie online ie non disruptive. Extending data areas are the most likely case for LUN extension. Our standing design and operational mandate is to minimise business downtime and to react swiftly to business demands." Hence this is a critical forward capability to enhance IT agility, efficiency and cost effectiveness and should be developed to apply in a Metro Mirror scenario.
This is a significant exposure for an enterprise class product. Not having the ability to extend LUNs in a MM relationship such that only the additional blocks are synchronised to the target questions the use of MM as a viable DR technology since SVC and DWDM bandwidth will dicatate the DR exposure period especially in scenarios where the client's data volumes under MM are ordinarily in excess of 10TB per system with multiple systems per site mutually participating and sharing the available bandwidth.