● Maximum VVOL Capacity
The following shows the maximum capacity that can be used for VVOLs from the maximum Thin Provisioning
Pool capacity that is set in the
ETERNUS AF.
Table 40 Maximum VVOL Capacity
Item ETERNUS AF250 S2/AF250
Maximum TPP capacity (reference) 2,048TB
Maximum VVOL capacity 256TB
● VVOL Management Information
Additional information called VVOL management information (metadata) is necessary for VVOLs. VVOL manage-
ment information is usually synchronized with the master information in the ETERNUS SF Storage Cruiser and
saved to a dedicated FTV within the ETERNUS AF container. The dedicated FTV is automatically created in the
storage container when creating a VVOL.
Table 41 VVOL Management Information Specifications
Item Explanation
Volume name (fixed) $VVOL_META
Volume type FTV
Usage System
Usage details VVOL management information
Capacity 1,040MB
Volume number (of each ETER-
NUS AF
)
1
•
When using VVOLs, LUN#224 to LUN#255 (or LUN numbers that are recognized on the server side) cannot
be used as Virtual Machine File System (VMFS) volumes because they are used for management.
•
Use ETERNUS SF Storage Cruiser to change the VVOL settings. Do not change any of the settings from ETER-
NUS Web GUI or ETERNUS CLI, except to enable the VVOL function.
•
If a VVOL management information dedicated FTV fails because of errors such as a RAID group failure, the
VVOL management information dedicated FTV must be recovered by recovering the RAID group, deleting
and recreating the VVOL management information dedicated FTV using ETERNUS CLI, and by performing a
backup (or synchronizing the VVOL management information) using ETERNUS SF Storage Cruiser.
•
If the VVOL management information dedicated FTV is formatted, performing a backup (or synchronizing
the VVOL management information), and recovery of the VVOL management information dedicated FTV us-
ing ETERNUS SF Storage Cruiser is required.
•
If the FTRP has already been created and the maximum Thin Provisioning Pool capacity and the chunk size
are changed, before setting VVOL using ETERNUS SF Storage Cruiser, execute the "set vvol-mode" command
of ETERNUS CLI to enable the VVOL function. For details on the chunk size, refer to "Thin Provisioning
" (page
46).
•
When registering multiple FTRPs in a storage container, do not mix FTRPs with different chunk sizes in the
same storage container.
•
To use VMware vSphere Replication, the controller firmware version of the ETERNUS AF must be V10L80 or
later.
1. Function
Server Linkage Functions
117
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
P3AG-1822-09ENZ0
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