TAG SV-2000-X2 Benutzerhandbuch

                                       

                                                                                                                          Operations Manual 

 

JHSV) 

A hot spare is a drive that is on standby in case 
another drive fails. Depending on how the 
array is configured, the drive is either picked up 
automatically and the array is rebuilt, or you 
manually select the drive (or insert a new drive 
in the same slot as the failed drive) and rebuild 
the array. 

How the hot spare works depends on how the 
array is configured. When a drive fails, the 
array rebuilds automatically using the hot 
spare. This is assuming that automatic rebuild 
is enabled. If automatic rebuild is disabled, you 
must manually start the rebuild process. 

During a rebuild you may notice degraded 
performance on the drives. 

 

A dedicated hot spare is assigned to one or 
more arrays, whereas a global hot spare can 
be used for any array that is on the same 
controller as the hot spare. Also, dedicated hot 
spares that reside in the same storage 
enclosure typically have better performance

 

than 

global hot spares.