HP 12000 HP StorageWorks 12000 Gateway Virtual Library System User Guide (AH81 - Page 119

Shutdown at 98% Capacity, Reclaiming Storage Space

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NOTE: Oversubscription cannot be disabled while cartridge capacity is oversubscribed. Shutdown at 98% Capacity The system displays warnings on the Notifications screen when the backend storage capacity consumed reaches the user-defined threshold (determined when you enabled oversubscription). Additional notifications are sent when the capacity consumed reaches 95% and again at 98%. At the level of 98%, the system will reject all attempts to write data from the backup application. Free up storage space or add more storage before reaching this point to ensure that no data is lost. All read operations remain unaffected. Once you reduce the capacity consumed to a level below the user-defined threshold, writes from the backup application resume automatically. However, if you reduce the capacity consumed to less than 98% but still above the threshold, you can manually resume writes by selecting Enable Writes (now visible) from the task bar of the Chassis status screen. When the storage capacity consumed exceeds the user-defined threshold, the system: • Displays warnings on the Notifications screen • Sends emails (if configured) to specified users • Sends alerts to the management consoles (if SNMP traps are configured) • Displays the Reclaim Space link on the Chassis status screen At this point, you can perform the following tasks: • Erase cartridges - erase or relabel expired cartridges to free up storage space. See your backup application manual for details. NOTE: Use the Cartridge Utilization report to identify cartridges that are consuming more space and can be erased to create more storage space. See "Receiving Automated Reports" on page 162. Erasing data from cartridges containing data that is not deduplicated will free up more storage space than erasing from cartridges with deduplicated data. • Reclaim space - see "Reclaiming Storage Space" on page 119. • Add more storage NOTE: You cannot hot-add storage while the VLS is deduplicating data. Reclaiming Storage Space The Reclaim Space task appears on the Chassis status screen when the storage capacity consumed reaches the user-defined threshold (or the default of 90%). This allows you to schedule reclamation of the additional storage you make available by erasing cartridges. First erase cartridges from your backup application, then follow the procedure below. HP StorageWorks 12000 Gateway Virtual Library System User Guide 119

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NOTE:
Oversubscription cannot be disabled while cartridge capacity is oversubscribed.
Shutdown at 98% Capacity
The system displays warnings on the Notifications screen when the backend storage capacity consumed
reaches the user-defined threshold (determined when you enabled oversubscription). Additional
notifications are sent when the capacity consumed reaches 95% and again at 98%.
At the level of 98%, the system will reject all attempts to write data from the backup application. Free
up storage space or add more storage before reaching this point to ensure that no data is lost. All
read operations remain unaffected.
Once you reduce the capacity consumed to a level below the user-defined threshold, writes from the
backup application resume automatically. However, if you reduce the capacity consumed to less than
98% but still above the threshold, you can manually resume writes by selecting
Enable Writes
(now
visible) from the task bar of the Chassis status screen.
When the storage capacity consumed exceeds the user-defined threshold, the system:
•
Displays warnings on the Notifications screen
•
Sends emails (if configured) to specified users
•
Sends alerts to the management consoles (if SNMP traps are configured)
•
Displays the
Reclaim Space
link on the Chassis status screen
At this point, you can perform the following tasks:
•
Erase cartridges
—
erase or relabel expired cartridges to free up storage space. See your backup
application manual for details.
NOTE:
Use the Cartridge Utilization report to identify cartridges that are consuming more space and can
be erased to create more storage space. See
“
Receiving Automated Reports
”
on page 162.
Erasing data from cartridges containing data that is not deduplicated will free up more storage
space than erasing from cartridges with deduplicated data.
•
Reclaim space
—
see
“
Reclaiming Storage Space
”
on page 119.
•
Add more storage
NOTE:
You cannot hot-add storage while the VLS is deduplicating data.
Reclaiming Storage Space
The Reclaim Space task appears on the Chassis status screen when the storage capacity consumed
reaches the user-defined threshold (or the default of 90%). This allows you to schedule reclamation
of the additional storage you make available by erasing cartridges. First erase cartridges from your
backup application, then follow the procedure below.
HP StorageWorks 12000 Gateway Virtual Library System User Guide
119