Additional Disk-Array Tasks
If you change the write policy to write-back, wait at least 10 seconds
after your last operation before you turn off the server. It takes that
long for the system to move the data from the adapter cache
memory to the hard disk drive. Failure to follow this practice can
result in lost data.
To change the write policy:
1. Start the ServeRAID configuration program (see “Starting the
ServeRAID Configuration Program” on page 80).
2. Select Advanced Functions from the Main Menu.
3. Select Change Write Policy from the Advanced Functions menu.
The cursor will be active in the Logical Drive list.
4. Select the logical drive whose write policy you want to change.
A screen similar to the following appears:
Bay
Bay
Array
Array
Ch
2
Ch
1
Bay
Array
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Ch
1
Ch
2
Ch
3
A
A
ONL
ONL
B
B
C
C
A
A
ONL
ONL
B
B
C
C
A
ONL
B
A
ONL
C
C
Advanced Functions
Select logical drive and press Enter to toggle the write policy.
Array
ID Size
A
4300
B
4300
C
4300
Log
Drv
AO
A1
A1
Size
(MB)
100
500
500
RAID
Level
RAID-0
RAID-1
RAID-1
Date
Created
12/13/95
12/13/95
12/13/95
Status
OKY
WT
OKY
WT
OKY
WT
TAP
SHS
HSP
DHS
B
RBL
RDY
ONL
DDD
ONL
ONL
ONL
ONL
ONL
ONL
ONL
ONL
ONL
IBM PC ServeRAID Adapter Disk Array Configuration Ver. 1.XX
Adapter Number: 1
Bus Number: 0 Host ID = Null Config
1. Help
2. Backup config. to Diskette
3. Restore config. from Diskette
4. Change Write Policy
5. Change RAID Parameters
6. IBM RAID Subsystem Diagnostics
7. Init/View/Synchronize Config
8. Display/Change Adapter Params
9. Exit
Wrt
Pol
Note: Your information might be different from that shown in
this screen.
The Logical Drive list contains the logical drive ID, the size in
megabytes of each logical drive, the RAID level you assigned to
that logical drive, and the date you created it.
The status of the logical drive is also shown. OKY means that
no problem conditions are associated with the drive; CRT
118
PC Server 520 User's Handbook for PCI/Micro Channel
Summary of Contents for PC Server 520
Page 1: ...PC Server 520 User s Handbook for PCI Micro Channel IBM...
Page 86: ...Installation Checklist 70 PC Server 520 User s Handbook for PCI Micro Channel...
Page 146: ...Using the Mini Configuration Program 130 PC Server 520 User s Handbook for PCI Micro Channel...
Page 190: ...Using the SCSISelect Utility Program 174 PC Server 520 User s Handbook for PCI Micro Channel...
Page 385: ...Installing Additional Test Programs 207 CMD 3 Chapter 7 Solving Problems 369...
Page 438: ...IBM Part Number 78H6336 Printed in U S A May 1996 78H6336...
