Snapshot
To create point-in-time snapshots for the original LUN of a LUN copy.
Only an incremental LUN copy supports this operation. After a LUN
copy, data of the target LUN is consistent with that of the original LUN
created in a point time.
Snapshot file
system
A snapshot is created for a file system and this snapshot is called
snapshot file system.
Snapshot quota
The maximum storage space is used for snapshot of file system, and the
quota is adjustable if necessary.
Soft Quota
A user may continue to require more storage space in a limited time
when the used storage space arrives to the soft quota.
Standby network
port
In relation to the active network port, the standby network port is a
redundant network port on an application server. When the active
network port fails, the standby network port is activated.
Storage controller
The component performs the following functions: operation
conversion, RAID, LUN mapping, disk-striping settings, and other
services and fault alarms. It consists of the controller board and port
module.
Storage system
An integrated system. It consists of the following parts: controller,
storage array, host bus adapter, physical connection between storage
units, and all control software.
Storage unit
An abstract definition of backup storage media for storing backup data.
The storage unit is connected with actual storage media, used to back
up data.
Streaming media
A transmission mode in which data is consumed (read, listened to, or
watched) while it is being sent.
Stripe
The process of dividing the consecutive data into the same-sized data
blocks and writing the data on each block into different disks. This
technology provides a faster read/write speed than a single disk can
provide.
Stripe depth
The number of blocks in a strip in a disk array that uses striped data
mapping. Also, the number of consecutively-addressed virtual disk
blocks mapped to consecutively-addressed blocks on a single member
extent of a disk array.
Stripe unit
The physical extent block that consists of stripes in each physical extent
of a redundancy group.
Stripe verify
To verify whether the check data block in a redundancy group stripe
protects the protected space in the stripe.
Subnet mask
The technology used by the IP protocol to determine where network
segment packets are destined for. The subnet mask is stored in a client,
server, or router in binary format. The subnet mask matches the IP
address.
OceanStor N8500 Clustered NAS Storage System
Installation Guide (for T Series V100R005)
C Glossary
Issue 02 (2015-09-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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