User Guide

28 NetWare Server Disks and Storage Devices Administration Guide
NetWare Server Disks and Storage Devices Administration Guide
103-000179-001
August 30, 2001
Novell Confidential
Manual 99a38 July 17, 2001
NOTE: Increasing the number of concurrent directory cache writes decreases the
speed of directory cache reads. Balance the speed of writes and reads to meet the
needs or your users.
If the parameter is currently at the default value of 10, try increasing the
value to 25. The changed value is now persistent.
6 Press Esc until you return to Available Options.
Turning Off Read-After-Write Verification
Read-After-Write Verify is almost always provided by the hard disk. If your
hard disk provides read-after-write verification, you might want to disable the
software version of read-after-write verification in order to nearly double the
speed of disk writes.
WARNING: Turning off read-after-write verification can increase the risk of data
corruption on the server's hard disk. You should use the following procedure only
if your disks provide read-after-write verification and are reliable or if your disk
subsystem provides data fault tolerance through mirroring or appropriate RAID
level.
Prerequisites
 Hard disks that provide their own means of read-after-write verification.
Procedure
1
From the MONITOR Available Options, select Storage Devices.
A list of Registered Storage Objects appears. The device information
associated with a highlighted storage device appears in the upper window.
You can verify the type of storage device in the Device Type field.
2 Select the desired hard disk from the list.
The Drive Status window appears. The Read After Write Verification
field indicates whether the feature is turned On or Off.
3 Press Enter to access the Read After Write Verification options.
4 To change Read After Write Status, select Disable Verify.
5 Press Esc to return to Available Options.
NOTE: You can also disable read-after-write verification by setting the Enable Disk
Read After Write Verify SET parameter to OFF. However, this setting affects only
those disks loaded after the parameter value is changed. It does not change the
setting for currently loaded disks.