Table 4.4 Volumes That Can Be Created - Fujitsu ETERNUS DX80 S2 Overview

Chapter 4 System Configuration
4.3 Volumes
The types of volumes that are listed in the table below can be created in the ETERNUS DX Disk storage system.
Table 4.4 Volumes that can be created
Type
Standard/Open
Snap Data Volume (SDV)
Snap Data Pool Volume
(SDPV)
Thin Provisioning Volume
(TPV)
Flexible Tier Volume (FTV)
Wide Striping Volume (WSV)
ODX Buffer
*1: When multiple volumes are concatenated using the LUN Concatenation function, the maximum capacity is also
128TB.
*2: The maximum total capacity of volumes and the maximum pool capacity in the ETERNUS DX Disk storage system are
also 128TB.
After a volume is created, formatting automatically starts. A server can access the volume while it is being
formatted. Wait for the format to complete if high performance access is required for the volume.
Volumes have different stripe sizes that depend on the RAID level and the stripe depth parameter.
The available user capacity can be fully utilized if an exact multiple of the stripe size is set for the volume
size.
If an exact multiple of the stripe size is not set for the volume size, unusable areas may remain.
Refer to "ETERNUS Web GUI User's Guide" for details about the stripe size.
This volume is used for normal usage, such as file systems and
databases. The server recognizes it as a single logical unit.
The area of this volume is used as the copy destination for
SnapOPC/SnapOPC+. There is a SDV for each copy destination.
This volume is used to configure the Snap Data Pool (SDP)
area. The SDP capacity equals the total capacity of the SDPVs.
A volume is supplied from a SDP when the amount of updates
exceeds the capacity of the SDV.
This virtual volume is created in a Thin Provisioning Pool area.
This volume is a target volume for layering. Data is
automatically redistributed in small block units according to
the access frequency. An FTV belongs to a Flexible Tier Pool.
This volume is created by concatenating distributed areas in
from 2 to 64 RAID groups. Processing speed is fast because
data access is distributed.
This volume is a dedicated volume that is required to use the
Offloaded Data Transfer (ODX) function of Windows Server
2012. When data is updated while a copy is being processed,
this area is used to save the source data. The volume type is
Standard/Open, TPV, or FTV.
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ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
Copyright 2013 FUJITSU LIMITED
Usage Maximum capacity
128TB (*1)
Approximately 0.1%
of the SDV virtual
capacity
2TB
128TB (*2)
128TB (*2)
128TB
1TB
P3AM-4812-11ENZ0