IBM XIV User Manual

Access Control:
User Category Permission
Storage administrator Allowed
Storage integration administrator Allowed
Application administrator Disallowed
Security administrator Disallowed
Read-only users Disallowed
Technicians Disallowed
Completion Codes:
v HOST_BAD_NAME
Host name does not exist
v PERF_CLASS_DOES_NOT_CONTAIN_ANY_HOSTS
Performance Class is already empty
Setting the Rate for a Performance Class
Sets the rate for a Performance Class
perf_class_set_rate perf_class=perfClassName [ max_io_rate=iops ] [ max_bw_rate=bw ]
Parameters:
Name Type Description Mandatory Default
perf_class Object name Name of a
Performance Class
Y N/A
max_io_
rate
Positive integer Specifies the
Performance Class
maximum rate in
IOPS per interface
(IOPS). The max
setting allowed is
100,000. If zero is
specified, the IOPS
rate will not be
limited.
N Keep unchanged.
max_bw_
rate
Positive integer Specifies the
Performance Class
maximum rate in
bandwidth per
interface (Mbps).
The max setting
allowed is 10,000.
If zero is specified,
the bandwidth rate
will not be limited.
N Keep unchanged.
This command sets the rate for a Performance Class. The specified rate is applied
for each interface module. Either max_io_rate, max_bw_rate or both attributes
must be set.
Example:
Chapter 2. Host and Cluster Management 31

IBM XIV Specifications

General

Power Supply	Redundant power supplies
Drive Type	SATA
Redundancy	Fully redundant components
Connectivity	Fibre Channel, iSCSI
Form Factor	Rack-mounted
Cache	Distributed cache across modules
Data Protection	Snapshots, remote mirroring
Performance	High throughput and low latency
Scalability	Modular, scale-out architecture
Cooling	Redundant cooling
Architecture	Grid-based, distributed architecture