Table of Contents
Advertisement
11.
Updating of Control Software
The disk array unit may upgrade the version of storage control software when a function or the like is
additionally installed.
You can use the added function by updating the storage control software of which version has been
upgraded.
You can update the storage control software by yourself. However, if you fail to update it, the disk
array unit can no longer operate at the worst.
NEC maintenance service representative provides the installation service (additionally charged) for
updating the storage control software. It is strongly recommended that you should ask your
maintenance service representative who has technical knowledge to update it.
12.
Snap Shot
The snap shot function can instantaneously make the virtual copy of a logical disk in the same disk
array unit. Only the difference data between the logical disk as the copy source and the virtual copy is
managed, so copies can be made with a small capacity.
The following specific software (separately priced) is necessary for using the snap shot feature.
For S1400
SystemGlobe DynamicSnapVolume - NEC Storage S1400
For details on the usage, refer to the User's Guide provided with the software.
Before the access control feature can be used on this disk array unit, the license lock must be released
by using the license key provided with the software.
You can release the license lock and make settings by yourself.
NEC maintenance service representative provides the installation service (additionally charged) for
releasing the license lock and making settings. Contact your maintenance service representative if
necessary.
12.1 Note on Using Snap Shot
SnapShot manages the difference data between the logical disk as the copy source and the virtual copy,
as a map on the cache memory. Thus, if the disk array unit is turned OFF and the time limit for holding
data with batteries is exceeded while the battery backup state is placed, processing for creating the
management information of the difference data is performed upon the next start. As a result, the
system startup is delayed depending on the difference data held by SnapShot. (Delay time: About 10
minutes difference data of 1TB)
To avoid the huge delay of next system startup with fully discharged battery, please run shutdown
process by pushing shutdown button before the power of disk array unit is turned OFF.
As the management information of the difference data will be stored into hard disk by execution of
A-6
Advertisement
Table of Contents
