Table 4-11
Storage pool advanced parameters
Parameter
Description
Setting
Used Capacity
Alarm
Threshold (%)
When the percentage of the used capacity of
the storage pool to the total capacity of the
storage pool (the used capacity for short)
reaches the used capacity alarm threshold, the
system generates an alarm. The alarm is
generated in 3 circumstances:
–
When the used capacity reaches the used
capacity alarm threshold, the system
generates an alarm informing that the
capacity of storage pool is insufficient.
–
When the used capacity alarm threshold is
not greater than 88 and the used capacity
reaches 90%, the system generates an
alarm informing that the storage pool is
running out.
–
When the used capacity alarm threshold is
not greater than 88 and the used capacity
reaches (used capacity alarm threshold
+2)%, the system generates an alarm
informing that the storage pool is running
out.
NOTE
If the used capacity alarm threshold is set to 85
and the used capacity reaches 85%, the system
generates an alarm informing that the capacity of
storage pool is insufficient, and when the used
capacity reaches 90%, the system generates an
alarm informing that the storage pool is running
out. If the used capacity alarm threshold is set as
91, when the used capacity reaches 93%, the
system generates an alarm informing that the
storage pool is running out.
A proper used capacity alarm threshold helps
you monitor the capacity usage of a storage
pool.
[Value range]
1 to 95
[Default value]
80
Data Migration
Granularity
A logical storage space with a fixed size
divided from a CKG. It is the smallest unit
(granularity) for data migration and hotspot
data statistics collection. It is also the
smallest unit for space application and release
in a storage pool. The default value
4 MB
is
recommended. The value cannot be changed
after being set.
NOTE
You can configure this parameter only when RAID
levels of storage tiers are typical configuration.
[Value range]
512 KB to 64 MB
[Default value]
4 MB
OceanStor V3 Series
HyperMetro Feature Guide for File
4 Configuration
Issue 05 (2018-01-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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