Huawei OceanStor 2000 V3 Series Features Manual page 110

OceanStor V3 Series
HyperMetro Feature Guide for File
Issue 05 (2018-01-30)
Parameter Description
Initial Policy for the storage tier to allocate
Capacity capacity to a file system.
Allocation
– Automatic allocation: The storage
Policy
system automatically allocates
capacity to a file system based on
the ratio of the available capacity of
the performance tier to that of the
capacity tier. Capacity is allocated
from the high performance tier only
when the capacity of the
performance tier and capacity tier is
insufficient.
– Allocate from the high performance
tier first: The storage system
allocates capacity to a file system
from the high performance tier first.
If the capacity of the high
performance tier is insufficient, the
storage system allocates capacity
from the other storage tiers, first
from the performance tier and then
from the capacity tier.
– Allocate from the performance tier
first: The storage system allocates
capacity to a file system from the
performance tier first. If the capacity
of the performance tier is
insufficient, the storage system
allocates capacity from the other
storage tiers, first from the capacity
tier and then from the high
performance tier.
– Allocate from the capacity tier first:
The storage system allocates
capacity to a file system from the
capacity tier first. If the capacity of
the capacity tier is insufficient, the
storage system allocates capacity
from the other storage tiers, first
from the performance tier and then
from the high performance tier.
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4 Configuration
Value
[Value range]
The value can be
Automatic allocation,
Allocate from the high
performance tier first,
Allocate from the
performance tier first, or
Allocate from the
capacity tier first.
[Example]
Automatic allocation
[Default]
Automatic allocation
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