Thecus i8500, Руководство пользователя

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11. Click
“Device”
tab, then click
“Advanced”
.
12. Click
“MPIO”
tab, select
“Load Balance Policy”
to
“Round Robin”
.
13. Click
“Apply”
.
14. Run
“Device Manage”
in Windows. Make sure MPIO device is
available.
15. Done.
The MC/S setup instructions are in the following:
1. Create RG/VD, and then attach LUN.
2. Add the first “Target Portal” on Microsoft iSCSI initiator, For MC/S,
there is only ONE
“Target Portals”
in the
“Discovery”
tab.
3. Logon.
4. Then
click
“Advanced…”
.
5. Select the first “Source IP” and “Target Portal” to iSCSI data port 1.
Then click
“OK”
.
6. After connected, click
“Details”
, then in the
“Session”
tab, click
“Connections”
.
7. Choose
“Round Robin”
in
“Load Balance Policy”
.
8.
“Add”
Source Portal for the iSCSI data port 2.
9. Select the second “Source IP” and “Target Portal” to iSCSI data port 2.
Then select
“OK”
.
10. Done.
G. BBM (Battery Backup Module) inspect steps
i8500 BBMs (battery backup module) protect the integrity of the cache data when
user uses “write-back” cache policy.
Write-back cache policy means i8500 reply to the host that write access is
complete when data is written into memory. Then i8500 writes the cached data to
the disk device when system activity is low or when the cache is getting full.
Another cache policy is “write through” which means i8500 reply to the host that
write access is complete only when the data is written into disks.
Writing a block of data to cache memory is much faster than write it to a disk
device, but there is risk for “write-back” cache policy. The risk of using write-back
cache policy is that the cached data can be lost if the AC power fails or power
outage before it has been written to the storage device. The risk factor could be
eliminated when i8500 has an onboard BBM. i8500 monitor the power supply if
BBM is installed. When power supply fail, then BBM mechanism switches the
memory power source from AC power to BBM and retain the data in memory.
When power supply recover, all data retain in memory will be flushed to storage
device without data lost.
PS. If the i8500 face power outage or abnormal shutdown, you will see following
log when restart the system.