valutazioni - 0, GPA: 0
(
)
)
|
da questo dispositivo ha anche altre istruzioni :
Facilità d'uso
Languages
•
International English
Enhancements
This section identifies enhancements since the previous release.
•
The driver now supports three levels of load balancing aggressiveness: Full Balancing, Less
Balancing, and no balancing. These levels can be set on the fly or at reboot time. Configuration
of a ‘preferred’ path still takes priority over the load balancing method. See the user guide for
details.
•
A new rebalancing command has been added. See the user guide for details.
Fixes
•
Session request now supports Operation In Progress errors.
Issues and workarounds
This section identifies important issues and workarounds for Advanced Path Failover.
Linux driver does not perform speed or performance comparisons of all available
paths to a device in order to select the best one as a primary.
Symptom: The device driver does not connect to the highest performance path after a system boot or
device rescan.
Workaround: The driver prefers the first path in the hardware scan performed by the operating system.
If a particular path is preferred, load the HBA for that path in the lower numbered hardware location.
In multi-host environments, device discovery on a newly introduced or rebooted
host could be problematic if the library is not idle during the discovery.
Symptom: A host in a multi-initiator environment does not discover a path to the library controller when
it is booted or the devices are rescanned when another initiator is using the library. Some applications
create an exclusive connection to the tape library and prevent drivers from performing proper discovery
and binding. Note that this is not unique to the HP APF drivers and can occur in environments not
using the APF drivers as well.
Workaround: Reboot or remove and re-insert the advanced failover drivers using modprobe while
the library is not being used.
A failure of the active control path drive and activation of the passive control
path drive near the same time that a reservation is being released may result in
the reservation not being released correctly.
Symptom: Tape library access commands fail with "Reservation Conflict" errors or "Medium Removal
Prevented" errors. In rare cases where access to all paths on the active control path drive is lost at the
same time that a reservation or prevent media removal setting is in the process of being changed or
if all paths are lost to an active control path drive in a multi-initiator environment and one host does
not recover from the path failure it is possible to have a reservation or prevention setting that is no
longer associated with a host. Note that this is not unique to the APF driver and is most likely to occur
in traditional multi-path configurations.
Workaround: Both the ESL G3 library font panel and the Windows diagnostic application provide a
method for clearing the stale settings. In the Windows diagnostic application it is found under
Actions→Clear Nexus Settings.
4
Languages
... Questo manuale è adatto anche per i modelli :
dati dispositivi di elaborazione - HP StoreEver ESL G3 700 slot Tape Library (113.59 kb)
dati dispositivi di elaborazione - HP StoreEver ESL G3 3000 slot Tape Library (113.59 kb)
dati dispositivi di elaborazione - HP StorageWorks 1U Rack-Mount Tape Drive Kit (113.59 kb)