Product specifications

Firmware Functionality Specifications
A-3
NOTE:
Regenerate Parity and Rebuild cannot take place
on a logical drive at the same time.
Create, Expand, and Add Drive operations
cannot take place on a logical drive at the same
time.
Background firmware
download
Firmware can be downloaded during active I/Os.
Auto recovery from
logical drive failure
(configuration on
drives)
Supported. When user accidentally removed the
wrong drive to cause the 2
nd
drive failure of a
one-drive-failed RAID5 / RAID3 logical drive, fatal
error may occur. However, you may force the
subsystem to reaccept the logical drive by
switching off the subsystem, installing the drive
back to its original drive slot, and then power on
the subsystem. The logical drive will be restored
to the one-drive-failed status.
NOTE:
To ensure smooth operation, sufficient cache memory buffer is
required for configurations made up of numerous logical units. An
intelligent trigger mechanism is implemented with firmware version
3.47 and later. If a subsystem/controller comes with a DIMM
module of the size equal or larger than 1GB, firmware automatically
enlarges the maximum numbers of logical units.
DIMM size < 1G DIMM
size >=
1G
Max. no. of LD 16 32
Max. no. of LV 8 16
Max. partitions per LD/LV 16 64
Max. no. of LUN 128 1024
A.2 Advanced Features:
Media Scan
Supported. Verify written data on drives to avoid
bad blocks from causing data inconsistency. If bad
blocks are found, data can be reconstructed by
comparing and recalculating parity from adjacent
drives (RAID1/3/5/6).
The “Reconstruction Writes” are followed by “Write
Verification” operation.