Changing the RAID Parameters
You can change the RAID parameters using the advanced functions.
To change the RAID parameters:
1. Start the ServeRAID configuration program (refer to “Starting
the Configuration Program” on page 25).
2. Select Advanced Functions from the Main Menu and press
Enter
.
3. Select Change RAID parameters and press Enter. The
following screen 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
Select a choice using the Up Arrow, ( ) Down Arrow, ( ) Left Arrow ( )
and Right Arrow ( ) keys.
Press Enter to change parameter. Press Esc to return to main menu.
Stripe
Unit Size
8K
Rebuild
Priority
High
Unattended
Off
Read
Ahead
On
1.
8K
2. 16K
3. 32K
4. 64K
1. Medium
2. High
3. Low
1. On
2. Off
1. On
2. Off
A
A
ONL
ONL
B
B
C
C
A
A
ONL
ONL
B
B
C
C
A
ONL
B
A
ONL
RDY
C
C
TAP
SHS
HSP
DHS
B
RBL
Advanced Functions
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
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
The default settings are:
Stripe Unit Size — 8 K
Attention:
After the stripe-unit size is chosen and data is
stored in the logical drives, the stripe-unit size cannot be
changed without destroying data in the logical drives.
The stripe-unit size is the amount of data written on a given
disk before writing on the next disk. To maximize the
overall performance, choose the stripe-unit size such that the
stripe-unit size is close to the size of the system I/O request.
The default is set to 8 K data bytes. You can set the
stripe-unit size to 8 K, 16 K, 32 K, or 64 K.
Chapter 2. Configuring Your Disk Arrays
69
Summary of Contents for PC Server 330
Page 1: ...PC Server 330 User s Handbook IBM...
Page 6: ...vi PC Server 330 User s Handbook...
Page 10: ...x PC Server 330 User s Handbook...
Page 32: ...18 PC Server 330 User s Handbook...
Page 100: ...86 PC Server 330 User s Handbook...
Page 134: ...120 PC Server 330 User s Handbook...
Page 240: ...Updating the Server Configuration 226 PC Server 330 User s Handbook...
Page 326: ...Resolving Configuration Conflicts 312 PC Server 330 User s Handbook...
Page 382: ...IBM Part Number 76H8834 Printed in U S A September 1996 76H8834...