IBM 86605SU Maintenance Manual - Page 41

Initializing Logical Drives, Adata scrubbing

Page 41 highlights

Note All new RAID level 5 logical drives are automatically synchronized when you initialize them. Initializing Logical Drives: Initializing a logical drive erases the first 1024 sectors on the drive and prevents access to any data previously stored on that drive. You must initialize all new logical drives before storing data in them. To initialize a logical drive: 1. Select the logical drive that you want to initialize from the Main Screen of the Administration and Monitoring utility program. A screen similar to the following appears. Logical Drive Information Logical Drive Number Blocked Part of Array Part of Merge Group Date Created State Size RAID Level Write Policy Read Ahead Strip Unit Size Number of Chunks Stripe Order 1 No A 1 05/19/97 OKY 100MB 0 WT On 8 KB 3 1,1 1,2 1,4 Unblock Initialize Synchronize OK 2. Click on Initialize to initialize the drive. Note RAID level 5 logical drives are automatically synchronized when you initialize them. You do not need to synchronize RAID level 0 or 1 logical drives before storing data. Synchronizing Logical Drives: The purpose of synchronizing logical drives is to compute and write the parity data on the selected RAID level 5 logical drives. Synchronizing a RAID level 1 logical drive copies the data from the primary disk to the mirrored disk. RAID level 5 logical drives are automatically synchronized when you initialize them. You do not need to synchronize RAID level 0 or 1 logical drives before storing data. Also, the data scrubbing feature of the ServeRAID controller continuously reads all sections of RAID level 1 and RAID level 5 logical drives "in the background" while your system 36 Netfinity Server HMM

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Note
All new RAID level 5 logical drives are
automatically synchronized when you initialize
them.
Initializing Logical Drives:
Initializing a logical drive
erases the first 1024 sectors on the drive and prevents
access to any data previously stored on that drive.
You
must initialize all new logical drives before storing data in
them.
To initialize a logical drive:
1.
Select the logical drive that you want to initialize from
the Main Screen of the Administration and Monitoring
utility program.
A screen similar to the following appears.
Logical Drive Information
Logical Drive Number
1
Blocked
No
Part of Array
A
Part of Merge Group
1
Date Created
05/19/97
State
OKY
Size
100MB
RAID Level
0
Write Policy
WT
Read Ahead
On
Strip Unit Size
8 KB
Number of Chunks
3
Stripe Order
1,1 1,2 1,4
Unblock
Initialize
Synchronize
OK
2.
Click on
Initialize
to initialize the drive.
Note
RAID level 5 logical drives are automatically
synchronized when you initialize them.
You do
not need to synchronize RAID level 0 or 1 logical
drives before storing data.
Synchronizing Logical Drives:
The purpose of
synchronizing logical drives is to compute and write the
parity data on the selected RAID level 5 logical drives.
Synchronizing a RAID level 1 logical drive copies the data
from the primary disk to the mirrored disk.
RAID level 5 logical drives are automatically synchronized
when you initialize them.
You do not need to synchronize
RAID level 0 or 1 logical drives before storing data.
Also,
the
data scrubbing
feature of the ServeRAID controller
continuously reads all sections of RAID level 1 and RAID
level 5 logical drives “in the background” while your system
36
Netfinity Server HMM