Disk Image Standard has only one rule, DateRange. No other rule types are allowed.
Disk Image Standard
The default rule is DateRange.
MinimumRevisions = 4.
Recurrence period is : 28 days, keep_latest.
This rule is defined as: For a volume, keep any revision for at least 28 days, and at least 4 revisions in total.
DateRange Archiving Parameters
MinimumRevisions - number of revisions to keep, between 1 and 99.
- Ranges array - a maximum of 3 elements are allowed.
- Duration (between 1 and 99).
- Unit (Day, Week, Month, Year, Forever). In case of Forever, this always needs to be last in the Ranges array.
- Restrictions on ranges - these match restrictions in SilverWind's Web Monitor UI.
¾ Unit(range "i") <= Unit( range "i+j"). For example, you cannot have 2 ranges where the first is Weeks and the second one is Days, instead the second one needs to be weeks, years or forever. Or, if the second range is in months, the first range can only be days or weeks.
¾ if range "i" and range "i+j" have the same unit, then the following condition must be met: Duration (range "i+j") > Duration (range "i"). For example, if the first range is one year, the second one can only be 2 years or more.
¾ where j>=1, j<=n-i and n is the number of ranges
Example - Disk Image Standard
The following json example is defined as:
"Keep all versions from now to 1 Month(s). After 1 Month(s), keep Monthly versions for 3 Month(s). After 3 Month(s) keep nothing. Keep no fewer than 10 version(s)."
{
"name":"Test Backup Set",
"type":"Disk_Image",
"selection":[
"c:"
],
"archivingRules":{
"dateRangeRules":[
{
"minimumRevisions":10,
"ranges":[
{
"duration":1,
"unit":"Month"
},
{
"duration":3,
"unit":"Month"
}
]
}
]
}
}