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DATA CENTER BEST PRACTICES
SAN Design and Best Practices 77 of 84
Quantitative Analysis: Radar Maps
SAN Admin Radar Map
SAN/Storage Admin Concerns
Rank
(1 is low,
10 is high) Notes
ISL utilization 8 Is trafc balanced across ISLs during peaks?
Switch outage 1 Have there been switch outages? If so what was the cause?
Zoning policy 6 Is the zoning policy dened?
Number of switches in the fabric 10 Is the current number of switches a concern for
manageability?
Scalability 6 Can the existing design scale to support additional
switches, servers, and storage?
Redundancy 10 Is the existing SAN redundant for supporting a phased
migration or rmware update?
Server: High availability 10 Does the cluster software fail over reliably?
Storage: High availability 10 Do the LUNs fail over reliably?
Available disk pool 6 Is there sufcient disk pool to support additional apps?
Management tools for SAN 4 Are the right management tools used for SAN management?
Application response 7 Have there been any instances of slow application response
but no outage?
page68_SAN_Design
Switch outage
Zoning policy
Scalability
RedundancyServer-high availability
Storage-high availability
Available disk pool
Application response
ISL/UltraScale ICL utilization
Management tools for SAN
Number of switches
in the fabric
0
10
8
6
4
2
Figure 43. SAN Admin Radar Map.
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