Data Domain: DD3300 Displays Unknown Disks Without Alerts
Zhrnutie: On Data Domain DD3300 appliances, you may notice one or more disks reported as unknown when running disk state commands, even though no alerts are posted. This behavior is expected and explained in this article. ...
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Symptómy
Unknown disk(s) displayed in CLI output without any active alerts
Example output from
# disk show state:
Disk Show State
-----------------
Dev 1 2 3 4 5 6 7 8
--- ------------------------
1-8 Y Y U U . . . .
--- ------------------------
Legend State Count
------ -------------- -----
. In Use Device 4
U Unknown Device 2
Y System Device 2
------ -------------- -----
Total 0 disks and 8 devs
Príčina
DD3300 appliances reserve certain disks for Cloud Tier functionality. If Cloud Tier is not activated, these reserved disks are shown as unknown in the system state.
- The reserved disks (typically 1TB) cannot be added to the Active Tier.
- The number of reserved devices depends on the DD3300 configuration.
(Source: PowerProtect DD3300 Hardware Overview and Installation Guide )
The number or devices reserved depends on the DD3300 configuration. As below:
Riešenie
- This is normal system behavior.
- The unknown disks are reserved for Cloud Tier and remain in this state until Cloud Tier is enabled.
- No action is required unless Cloud Tier activation is planned.
Dotknuté produkty
Data Domain, DD3300 ApplianceProdukty
Data Domain, Data Domain Deduplication Storage SystemsVlastnosti článku
Číslo článku: 000060053
Typ článku: Solution
Dátum poslednej úpravy: 16 dec 2025
Verzia: 4
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