Managing Flash Accel caching systems
:
Understanding the user interface
:
Viewing resource details
: Viewing disk details
Viewing disk details
When you open the details page for a VM, FMC displays a Show Me menu in the left pane. Click
VM Disks
to navigate to a page showing each disk setup on the virtual machine. Click
Info
to display the details for a disk.
Click
VM Information
in the Show Me menu to navigate back to the VM details page.
vDisk Overview
The table below describes fields in the vDisk Overview area of the disk details page.
Field
Description
vDisk Identifier
The disk signature.
Path
The drive to which the disk is mapped.
Flash Accel Overview
The table below describes fields in the
Flash Accel
Overview area of the disk details page.
Field
Description
Cache State
Whether caching is enabled on the disk.
Operational State
The operational health of the cache on the disk.
Cache Mode
The caching mode for the disk: Write Thru, Write Around, or Pass Thru.
Operational Message
The message for the current operational state. For a normal operational state, the caching mode: Write Thru, Write Around, or Pass Thru.
Cache Metrics
Whether cache metrics collection is enabled for the disk.
Metrics
The table below describes fields in the Metrics area of the disk details page.
Field
Description
Read Latency (ms)
The average read latency per incoming read operation.
Read Ops
The total number of read operations.
Write Latency (ms)
The average write latency per incoming write operation.
Write Ops
The total number of write operations.
Hit Rate %
The percentage of read requests serviced from cache.
Cache Latency (ms)
For read requests serviced from cache, the average read latency per incoming read operation.
Population %
The percentage of allocated cache currently being used by the virtual machine.
If this number is very low, you may have allocated too much cache to the virtual machine.
Insertion Rate %
The percentage of items inserted into cache after read requests are serviced from the storage system. In other words, the percentage of read requests not serviced from cache.
Parent Topic:
Viewing resource details
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