Analyzing tier metrics
As parity groups are created, the various disk types become categorized into
tiers. The tiers and corresponding disk types are shown below.
Table 1 Tier definitions
Tier Disk type
Platinum SSD, FMD, and FMD DC2
Gold SAS 15 k
Silver SAS 10 k
Bronze SAS 7.2 k
Note: Adding all tier capacities together equals the Total Usable Capacity in
the center of the information gauge.
Analyzing data protection metrics
The balance of your protected primary volumes and secondary volumes
depends on the number of copies you have chosen to maintain, and also on
the type of the data protection technology being used. If you choose to set
aside more volumes for data protection, then the overall usable capacity may
be affected. On the other hand, if you have a large amount of unprotected
data, you may want to consider data protection options.
Note: These data protection capacity numbers are based on oversubscribed
allocations and as a result will correlate with the overall oversubscription
percentage, not the usable capacity numbers represented in the rest of the
information gauge.
Inventory and resource information
The inventory pages display details about the storage system resources in
Storage Advisor. These resources include storage systems, servers, ports,
and pools, volumes, parity groups, external parity groups (if the storage
system has external storage), and replication groups. If the storage system
26 System administration overview
System Administrator Guide for VSP Gx00 models and VSP Fx00 models
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