Specifications

DS300f G2 Series User Manual
75
meDIa Patrol
Media Patrol is a routine maintenance procedure that checks the magnetic media on each disk drive. Media
Patrol checks are enabled by default on all disk arrays and spare drives. Media Patrol is concerned with the media
itself,notthedatarecordedonthemedia.IfMediaPatrolencountersacriticalerror,ittriggersPDMifPDMis
enabled on the disk array.
See "Making Disk Array Settings" on page 93,and"Media Patrol" on page 75.
MAking MediA PAtrol settings
To make Media Patrol settings:
1. Click the Administration tab.
2. Click the Background Activities icon.
The list of background appears.
3. Click the Settings button.
4. Check the Enable Media Patrolboxtoenable,unchecktodisable.
This settings enables or disables Media Patrol for your entire RAID system.
5. Click the Conrm button.
You can also enable or disable Media Patrol on individual disk arrays.
reDunDancy check
Redundancy Check is a routine maintenance procedure for fault-tolerant disk arrays (those with redundancy)
that ensures all the data matches exactly. Redundancy Check can also correct inconsistencies.
See "Redundancy Check on a Logical Drive" on page 99
MAking redundAncy check settings
To make Redundancy Check settings:
1. Click the Administration tab.
2. Click the Background Activities icon.
The list of background activities appears.
3. Click the Settings button.
4. Click the Redundancy Check Rate drop-down menu and choose a rate:
• Low
–FewersystemresourcestoRedundancyCheck,moretodataread/writeoperations.
• Medium–BalancessystemresourcesbetweenRedundancyCheckanddataread/writeoperations.
• High–MoresystemresourcestoRedundancyCheck,fewertodataread/writeoperations.
5. Click the Conrm button.
InItIalIzatIon
Technically speaking, Initialization is a foreground activity, as you cannot access a logical drive while it is
initiating.
Initialization is normally done to logical drives after they are created from a disk array. Initialization sets all data
bits in the logical drive to zero. The action is useful because there may be residual data on the logical drives left
behindfromearliercongurations.Forthisreason,Initializationisrecommendedwheneveryoucreatealogical
drive.
See "Initializing a Logical Drive" on page 99.
MAking initiAlizAtion settings
To make initialization settings:
1. Click the Administration tab.
2. Click the Background Activities icon.