Administrator Guide

Attribute or Operation Restriction
Pool move Thin clones inherit the pool setting of the template volume. If you move the template volume to
a dierent pool, the thin clones also move.
Replication You can replicate a template volume only one time. You cannot replicate a thin clone until you
replicate the template volume to which the thin clone is attached.
Failover You can permanently promote a template replica set to a template volume only if you rst
permanently promote all the attached thin clone replica sets to thin clones.
Failback You cannot demote a template volume to a failback replica set. You cannot fail back a template
volume. To fail back a thin clone volume, the template volume must exist on the primary group.
Deletion You cannot delete a template volume if it has thin clones or failback thin clone replica sets
attached to it.
You cannot delete a recovery template volume if any recovery thin clone volumes, thin clone
replica sets, or permanently promoted thin clone replica sets are still attached to the volume.
Synchronous replication See About Using Thin Clones and Templates with Synchronous Replication.
Convert a Standard Volume to a Template Volume
You can convert standard volumes to a template volume. The following prerequisites and considerations apply:
• When you convert a standard volume to a template volume, the template volume is thin provisioned, read-only, and oine. You
can set the volume online at any time.
• When you convert to a template volume, the group disables any schedules that include the volume. If you later convert the
template volume to a standard volume, the group does not automatically enable the schedules.
• Before converting to a template volume, make sure that the standard volume contains all the data that is shared with the thin
clones.
• You cannot convert a volume to a template while it is a member of a collection.
• Make sure that the standard volume has sucient free space to hold the approximate amount of data that you write to each thin
clone.
For example, if the reported size of the template volume is 1GB, and in-use space is 900MB, you can write approximately 100MB
to each thin clone before you must increase the thin clone size.
To convert a standard volume to a template volume:
1. Click Volumes.
2. Expand Volumes and then select the volume name.
3. Click Convert to template.
4. Conrm that you want to convert the volume to a template volume.
Create a Thin Clone
To create thin clones from template volumes, you need the following information:
• Clone name
Name can be up to 63 bytes and is case-insensitive. You can use any printable Unicode character except for ! " # $ % & ' ( ) *
+ , / ; < = > ?@ [ \ ] ^ _ ` { | } ~. First and last characters cannot be a period, hyphen, or colon. Fewer characters are accepted
for this eld if you type the value as a Unicode character string, which takes up a variable number of bytes, depending on the
specic character.
• Clone description (optional)
Descriptions can be up to 127 bytes long. Fewer characters are accepted for this eld if you type the value as a Unicode
character string, which takes up a variable number of bytes, depending on the specic character.
• Storage space assignment:
About Volumes
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