Disk Array" - Asus DS300j G2 Series User Manual

C 7: t
hapter eChnoloGy
This chapter covers the following topics:
• "Disk Arrays" on page 183
• "Logical Drives" on page 184
• "Spare Drives" on page 193
• "RAID Controllers" on page 194
• "iSCSI Management" on page 197
• "Internet Protocols" on page 200
183
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Isk rrays
Disk array technology includes:
• "Media Patrol" on page 183
m P
eDIa atrol
Media Patrol is a routine maintenance procedure that checks the magnetic media on each disk drive. Media
Patrol checks all physical drives assigned to disk arrays and spare drives. Media Patrol does not check unconfigured
drives.
Media Patrol checks are enabled by default on all disk arrays and spare drives. You can disable Media Patrol in
the disk array and spare drive settings, however that action is not recommended.
Unlike Synchronization and Redundancy Check, Media Patrol is concerned with the condition of 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.
Media Patrol has three status conditions:
• Running – Normal. You can access your logical drives at any time.
• Yield – Temporary pause while a read/write operation takes place.
• Paused – Temporary pause while another background runs. Or a pause initiated by the user.
DS300f G2 Series User Manual