MicroNet Gforce3 MegaDisk Installationsanleitung PDF herunterladen (Seite 9)

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Optimizing Windows Caching Algorithm

By default, Windows XP optimizes caching for performance

on external drives. Windows Vista and 7 optimize caching for

quick removal. As a result, Windows XP appears to have

faster access to external disks but at a greater risk of data

corruption and loss. To change Windows' caching algorithm,

open the disk management console (as described on page 8)

on your system drive.

A list of the attached

drives and their

respective volumes will

appear. Right-click on

the Fantom external

disk in the disk list and

select properties.

Select the Policies Tab

near the top left of the

window, and click your

desired optimization

level. press OK when

finished, and you may

close the disk

management applet.

Optimizing for performance can greatly enhance the

throughput of your disk but is much more vulnerable

to data loss! Make sure to have appropriate backup

strategies before enabling this feature!

RAID 1 (Mirror)

The SAFE storage policy

stores all data in duplicate on

each drives to protect against

data loss due to drive failure.

One drive mirrors the other

at all times, which means

every write operation goes to

both drives. SAFE provides

the highest level of data fault

tolerance, but halves the amount of storage capacity

because all data must be stored twice. The resulting

storage capacity of the virtual SAFE volume will be equivalent

to the size of one hard drive. If one drive fails, the SAFE

volume is still usable, but it is in a vulnerable state because

its mirrored hard drive is inaccessible. When the offline drive

is replaced, the GForce3 Mega will begins a rebuild process

immediately to restore data redundancy.

Although the volume remains available during the rebuild

process, the volume is susceptible to data loss through

damage to the remaining drive until redundancy is

restored at the end of the rebuild and verification process.

Host access takes precedence over the rebuild process. If

you continue to use the mirrored volume during the rebuild,

the rebuild process will take a longer time to complete, and

the host data transfer performance will also be affected.

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