IBM Storwize V7000 Unified Problem Determination Guide

Table 62. Cache statistics collection for volumes and volume copies (continued)
Statistic Acronym
Statistics for
volume
cache
Statistics for
volume
copy cache
Statistics for
volume
cache
partition
Statistics for
volume
copy cache
partition
Statistics for
the Node
Overall
Cache
Cache
statistics for
mdisks
Units and
state
Write Cache
Fullness
Average
wfav Yes %,
non-
cumulative
Write Cache
Fullness Max
wfmx Yes %,
non-
cumulative
Write Cache
Fullness Min
wfmn Yes %,
non-
cumulative
Read Cache
Fullness
Average
rfav Yes %,
non-
cumulative
Read Cache
Fullness Max
rfmx Yes %,
non-
cumulative
Read Cache
Fullness Min
rfmn Yes %,
non-
cumulative
Pinned
Percent
pp Yes Yes Yes Yes Yes % of total
cache
snapshot,
non-
cumulative
data transfer
latency
average
tav Yes Yes µs capped
9999999,
non-
cumulative
Track Lock
Latency
(Exclusive)
Average
teav Yes Yes µs capped
9999999,
non-
cumulative
Track Lock
Latency
(Shared)
Average
tsav Yes Yes µs capped
9999999,
non-
cumulative
Cache I/O
Control Block
Queue Time
hpt Yes Average µs,
non-
cumulative
Cache Track
Control Block
Queue Time
ppt Yes Average µs,
non-
cumulative
Owner Remote
Credit Queue
Time
opt Yes Average µs,
non-
cumulative
Non-Owner
Remote Credit
Queue Time
npt Yes Average µs,
non-
cumulative
Admin Remote
Credit Queue
Time
apt Yes Average µs,
non-
cumulative
Cdcb Queue
Time
cpt Yes Average µs,
non-
cumulative
222 Storwize V7000 Unified: Problem Determination Guide 2073-720

IBM Storwize V7000 Unified Specifications

General

Model	IBM Storwize V7000 Unified
Storage Type	Unified Storage
RAID Levels	RAID 0, 1, 5, 6, 10
Form Factor	2U
Drive Types Supported	SAS, SSD
Maximum Drives	504
Network Protocols	iSCSI, FC, FCoE
Drive Bays	24 per enclosure
Host Interface	8 Gb FC, 1 Gb/10 Gb iSCSI
File Protocols	NFS, CIFS
Block Protocols	iSCSI, Fibre Channel
Type	Unified Storage
Maximum Host Ports	16
Operating System Support	VMware, Microsoft Windows, Linux, AIX
Data Services	Thin provisioning, replication
Power Supply	Redundant power supplies
Host Interfaces	8 Gbps Fibre Channel, 10 Gbps iSCSI, 1 Gbps iSCSI