Hello, we are considering creating a storage management group from within a current technical support staff which...
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consists of one storage administrator for MVS. This new group will also be responsible for managing data on the NT and the AIX platform as well as MVS. Responsibilities would include daily support, satisfying allocation requests, monitoring, developing strategies, capacity planning, backup/restore and DR. Our storage environment currently consists of about 10TB on disk and 100+TB on tape. Is there an industry rule of thumb on how many storage administrators would be needed to comprise such a workload? ie: x amount of TB per administrator.
Your response would be appreciated.
It's difficult to provide a rule of thumb on how many storage managers are required per x TB. The reasons are multiple:
- Is the storage centrally located or distributed?
- What tools are used to help manage, HSM, ERP...?
- Experience and quality of managers.
- Different OSs are easier than others to manage which affect TCO including storage management resources.
1) A small number of administrators spearhead storage management issues (3 to 5 people). This is dependent on the distribution of storage and storage platforms.
2) Appropriate utilities are utilized for space allocation, reporting, capacity planning and centralized management.
3) As storage policies are enforced, certain responsibilities are delegated down. For example, if quotas are implemented, the help desk may be able to increase quotas to a certain amount based on corporate policies.
4) Different platforms have different space and storage management requirements. For example, NT shares grow at a faster rate then Unix shares due to the functionalities of the servers, hence they have different management requirements and costs.
5) Distributed storage has a higher cost of management (and human resources) than centralized storage.
6) With appropriate Storage Resource Management (SRM) policies and utilities in place, the cost of managing an additional TB of storage is lower than the previous TB of storage (Economies of Scale).
I hope this helps!
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