DataDirect Networks EF2800, User Manual

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
O t h e r E F 2 8 0 0 C o n f i g u r a t i o n s
8.9 Rescanning All Ports
You can tell the EF2800 to scan all disk ports for new or removed disk
drives. You can use this option when you install or remove disk drives.
The rescan temporarily pauses all I/O processes, then resumes normal
operation.
If you are using an enclosure with an EMP, the EF2800 performs a
rescan automatically. With an EMP, the EMP detects the change in
drive status and updates the EF2800 about removed drives almost
immediately; however, installed drives will be detected after a three-
minute delay. This delay is to allow the new drives to spin up.
To rescan all ports:
1. From SAM, select
Manage EF2800
>
Utilities
. The Rescan page
displays.
2. Click
Rescan
.
8.10 Pausing I/O
Most drive enclosures allow you to remove and replace drives while FC
device port activity continues. However, you may still want to pause I/
O if you are replacing more than one disk drive. The Hot Swap Pause
option suspends activity on all device channels used in the EF2800,
thereby ensuring data integrity on the connected drives and arrays.
C
AUTION
: Pausing I/O halts active I/O to the host.
N
OTE
: If you are not sure that your JBOD enclosure supports hot
swapping, use the Hot Swap Pause option before you remove or replace
any drives in an array.
To pause I/O:
1. From SAM, select
Manage EF2800
>
Utilities
>
Hot Swap Pause
.
The Hot Swap Pause page displays.