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Hardware
362
The Write Policy has the following modes depending on combination with WrtThru for BAD BBU.
Select a mode suitable for your environment.
WrtThru for BAD BBU
Checked
Unchecked
WBack
Normal write back mode
(recommended)
The controller uses cache
memory for writing.
However, if the battery is
being charged or failed, the
controller operates in WThru
(write through) mode
automatically. Thus, this
mode can provide higher data
security.
Constant write back mode
The controller always uses
cache memory for writing. In
this mode, the data in cache
memory may not be protected
from being lost if the power
failure occurs due to
charge/discharge or defect of
the battery. Be sure to use UPS
when specifying this mode for
write policy.
Write Policy
WThru
Write through mode
The controller does not use
cache memory for writing
data.
This mode can provide
higher data security,
however, writing performance
is lower than that in WBack
mode.
* This mode is unavailable.
If you do not check "WrtThru for
BAD BBU" at creation of VD,
this item is automatically
checked after the VD has been
created.
You can change parameters for VD definition except for RAID Level and Stripe Size. On the
WebBIOS Home Menu, select [Virtual Disks], press
Enter
, and specify parameters in "Policies"
frame, then select [Change] and press
Enter
.
Содержание Express 5800
Страница 73: ...73 Memo ...
Страница 279: ...Hardware 279 3 BIOS Menu screen is displayed ...
Страница 336: ...Hardware 336 Display Screen for WebBIOS Physical Drives Property Screen for Universal RAIDUtility Physical Devices ...
Страница 339: ...Hardware 339 3 BIOS will start Select Save Exit then press Enter ...
Страница 365: ...Hardware 365 6 Select Home at the lower left of the screen and press Enter to go back to WebBIOS Home Menu ...
Страница 444: ...444 Part Number Part number FRU File ID FRU file ID Asset Tag Asset management tag ...
Страница 526: ...526 Then input User Name for Authentication and select Keyboard interactive Then input Password ...
Страница 573: ...573 Memo ...
Страница 583: ...Software 583 Memo ...
Страница 690: ...Operation and Maintenance 690 Memo ...
Страница 719: ...XXIX Memo ...