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Using Volume Mirroring for Fault Tolerance
4-20
Express5800/320Ma: System Administrator’s Guide
Configuring the Priority of RDR Virtual Disk Resynchronization
The resynchronization priority establishes the portion, expressed in megabytes per
second (Mbps) in the details pane, of I/O bandwidth that is used for the RDR disk
resynchronization operation.
To prioritize resynchronization for all RDR disks in the system
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 GlobalResyncPriority to Low, Normal, or High and click OK.
To prioritize resynchronization for individual RDR disks
1. In ftSMC, expand the appropriate I/O Enclosure node and click Logical Disk
Information.
2. Right-click the target RDR virtual disk.
3. Select Set Resync Priority.
4. Select Low, Medium, or Normal and click OK.
Using Volume Mirroring for Fault Tolerance
When using Windows Disk Management to implement data fault tolerance, format
volumes as NTFS volumes.
•
Configure disks as dynamic disks. Dynamic disks organize data within volumes on
a disk and support fault-tolerant operation and disk migration between systems.
•
Mirror each volume (the boot volume on the system disk and all data volumes) on
two or more physical disks. See
“Mirroring Disks in Your Express5800/320Ma
System” on page 4-24
for details.
•
Assign system disks and data disks to the same disk group.
C A U T I O N
!
Failure to set up your disk storage as required results in
storage that is not fault tolerant.
System disk usage topics include mirroring disks,
mirror resynchronization
, and
information about
inserting more than one disk at time
.
A mirror is an identical copy of data that you can access if your primary data becomes
unavailable. NEC Solutions (America), Inc. requires that you mirror the boot volume on
the system disk. The resulting mirrored pair of disks work together to provide a
Summary of Contents for Express5800/320Ma
Page 1: ...NEC Solutions America Inc NR014W Express5800 320Ma System Administrator s Guide ...
Page 10: ...Tables x Express5800 320Ma System Administrator s Guide ...
Page 14: ...Preface xiv Express5800 320Ma System Administrator s Guide ...
Page 22: ...Windows Documentation 1 8 Express5800 320Ma System Administrator s Guide ...
Page 50: ...Performing ftSMC Tasks 3 14 Express5800 320Ma System Administrator s Guide ...
Page 78: ...Finding a Physical Disk 4 28 Express5800 320Ma System Administrator s Guide ...
Page 100: ...Security Configuration Wizard A 6 Express5800 320Ma System Administrator s Guide ...
Page 122: ...Index Index 8 Express5800 320Ma System Administrator s Guide ...