Verifying Rdr Disks - NEC Express5800/320Ma Administrator's Manual

To replace a failed physical RDR disk
1. Remove the failed disk.
2. Insert a blank replacement disk.

Verifying RDR Disks

RDR disk verification verifies the integrity of RDR disk mirrors. Specifically, it:
1. Reads all sectors on both disks. If it detects a read error, it recovers the degraded
sector from the good partner disk. This safeguards the integrity of both disks.
2. Compares the data from each sector on both disks. If it detects a discrepancy, it
logs an error to the event log. In the unlikely event that this happens, contact NEC
Technical Support or your authorized service representative, or log an issue under
their maintenance contract.
To verify an RDR disk
1. In ftSMC, expand ftServer I/O Enclosures and click Logical Disk Information.
2. Right-click the appropriate RDR virtual disk.
3. Select Verify RDR Virtual Disk.
A message appears, stating that the operation completed successfully, meaning that
the command has been executed.
To stop verifying an RDR disk
Use the following procedure to stop RDR verification.
1. In ftSMC, expand ftServer I/O Enclosures and click Logical Disk Information.
2. Right-click the appropriate RDR virtual disk.
3. Select Stop Verify RDR Virtual Disk.
A message appears, stating that the operation completed successfully, meaning that
the command has been executed.
To set the interval for automatic RDR disk verification
1. In ftSMC, expand ftServer Drivers, right-click SCSI Port Duplex
Driver - Sradisk_Driver, and select Properties.
2. In the dialog box, click the third Properties tab from the left.
3. Set the LunVerifyInterval property to the desired value and click OK.
The default value is 10080 minutes (7 days), meaning 10080 minutes from the time
of the last verification command. The nonzero minimum value cannot be less than
60 minutes. A value of 0 disables automatic RDR disk verification.
Using RDR for Fault Tolerance
Disk Storage Management 4-19