APC RAID Subsystem SCSI-SATA II User Manual download pdf (Page 60)

SAS / SATA II NAS System

User’s Manual

Volume Name:

The default Volume Set name will appear as “Volume---VOL#XXX”. You can rename

the Volume Set name provided it does not exceed the 16 characters limit.

Raid Level:

Set the RAID level for the Volume Set. Click the down-arrow in the drop-down list. The

available RAID levels for the current Volume Set are displayed. Select the preferred

RAID level.

Capacity:

The maximum Volume Set size is displayed by default. If necessary, change the

Volume Set size appropriate for your application.

Greater Two TB Volume Support:

If the Volume Set size is over 2TB, an option “Greater Two TB Volume Support” will be

automatically provided in the screen as shown in the example above. There are three

options to select: “No”, “64bit LBA”, and “4K Block”).

No: Volume Set size is set to maximum 2TB limitation.

64bit LBA: Use this option for UNIX, Linux, and Windows Server 2003 + SP1 or later

versions. The maximum Volume Set size is up to 512TB.

4K Block: Use this option for Windows OS such as Windows 2000, 2003, or XP.

The maximum Volume Set size is 16TB. Just use the Volume as “Basic Disk”.

Volume can’t be used as “Dynamic Disk”; also can’t be used in 512Bytes block

service program.

NOTE: For NAS system usage, if you want the maximum capacity

allowed to be over 2TB and to have a single Volume Set over 2TB,

select the “64bit LBA” option.

Initialization Mode:

Set the Initialization Mode for the Volume Set. Foreground mode is completed faster

but Volume Set but be completed before it becomes accessible. Background mode makes

the Volume Set available instantly but the initialization process takes longer.

Stripe Size:

This parameter sets the size of the stripe written to each disk in a RAID 0, 1, 0+1, 5

or 6 Volume Set. You can set the stripe size to 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or

128 KB.

A larger stripe size produces better-read performance, especially if your computer does

mostly sequential reads. However, if you are sure that your computer does random

reads more often, select a small stripe size.

NOTE Stripe Size in RAID level 3 can’t be modified.

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APC RAID Subsystem SCSI-SATA II User Manual Page 60