Max command length, Auto activate incomplete raid, Disk write cache mode – Areca ARC-8050T3U 6-Bay Thunder3 Desktop RAID Storage Array User Manual

Page 94: Write same for initialization, Hot plugged disk for rebuilding, Web browser-based configuration

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WEB BROWSER-BASED CONFIGURATION

94

• Max Command Length

Max Command Length is used to set a "best" IO size for the

RAID storage.

• Auto Activate Incomplete Raid

When some of the disk drives are removed in power off state

or boot up stage, the RAID set state will change to “Incom-

plete State”. But if a user wants to automatically continue to

work while the RAID storage is powered on, the user can set

the “Auto Activate Incomplete Raid” option to enable. The

RAID state will change to “Degraded Mode” while it powers

on.

• Disk Write Cache Mode

User can set the “Disk Write Cache Mode” to Auto, Enabled,

or Disabled. “Enabled” increases speed, “Disabled” increases

reliability.

• Write Same For Initialization

Drives that support the Write Same feature (SCT) can write to

multiple drive sectors at once, improving initialization time. To

take advantage of this feature, all the drives in the unit must

support “Write Same” command. User can set the “SAS And

SATA”, “SAS Only”, “SATA Only or “Disabled” for the controller

initialization.

• Hot Plugged Disk For Rebuilding

It defines if the RAID array volume should start rebuilding or

not when detects a disk is inserted/re-inserted during online.

The options are: “Blank Disk Only”, “Always”, and “Disable”.

The default is “Blank Disk Only”.

“Blank Disk Only” – it will trigger the rebuilding if and only if

the inserted disk has not been in the RAID array before, which

has no RAID signature on it. So when a previously removed

disk is self re-inserted, it won’t trigger the degraded RAID ar-

ray to rebuild, and so that the administrator has a chance to

identify this miss-behaving disk and replace it.

“Always” – it is what it was before. Whenever a disk is insert-

ed/re-inserted whether new or previously existed, it always

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