Huawei OceanStor N8500 T Series Installation Manual page 373

OceanStor N8500 Clustered NAS Storage System
Installation Guide (for T Series V100R005)
Snapshot
Snapshot file
system
Snapshot quota
Soft Quota
Standby network
port
Storage controller The component performs the following functions: operation
Storage system
Storage unit
Streaming media
Stripe
Stripe depth
Stripe unit
Stripe verify
Subnet mask
Issue 02 (2015-09-22)
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.
A snapshot is created for a file system and this snapshot is called
snapshot file system.
The maximum storage space is used for snapshot of file system, and the
quota is adjustable if necessary.
A user may continue to require more storage space in a limited time
when the used storage space arrives to the soft quota.
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.
conversion, RAID, LUN mapping, disk-striping settings, and other
services and fault alarms. It consists of the controller board and port
module.
An integrated system. It consists of the following parts: controller,
storage array, host bus adapter, physical connection between storage
units, and all control software.
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.
A transmission mode in which data is consumed (read, listened to, or
watched) while it is being sent.
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.
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.
The physical extent block that consists of stripes in each physical extent
of a redundancy group.
To verify whether the check data block in a redundancy group stripe
protects the protected space in the stripe.
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.
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