Visionman SCM200 Guía de usuario descargar pdf (Pagina 29)

Storage Screens 2 & 4 DRIVE USER GUIDE

Page 29 of 57

WARNING: CHANGING THE RAID TYPE WILL ERASE ALL DATA. PLEASE BACKUP YOUR FILES

BEFORE CHANGING THE RAID SETTINGS.

Manage RAID

The Manage RAID screen allows you to configure the SATA hard drives into different RAID types.

RAID (Redundant Array of Independent Disk Drives) refers to an array of multiple independent hard drives that

provide high performance and reliability. RAID function depends on the number of drives present and the RAID

level you selected.

SCM200 supports the following RAID levels:

Stripe (RAID 0) - All data are distributed evenly to all existing drives. The two drives work in unison to

maximize system performance. However, RAID 0 has high risks of data security. If one drive fails then

all the data in both drives is lost.

Mirror (RAID 1) - Two hard drives are required. Data written to one hard drive is simultaneously duplicated

to another hard drive. If one drive fails, the other drive continues to function as a single drive until the

failed drive is replaced. To create a mirror you must select unallocated space on another hard drive and

the unallocated space must be the same size or larger than the source drive you want to mirror that data.

Data on a mirrored drive is secured, if one hard drive fails, SCM200 administers a warning and the failed

drive must be replaced immediately.

Span - Also known as a Linear array. Two hard drives are required. Several hard drives are configured

as a single volume with a size equal to the total of all the member disks. However, span does not

increase system performance or data security.

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Visionman SCM200 Guía de usuario Pagina 29