Infortrend RAID Controller Manual

Maximum concurrent Host
LUN connection
User adjustable up to 64
Number of Tags Reserved User adjustable up to 256
for each Host-LUN
connection
Drive I/O timeout User adjustable
Caching Operation:
Write-back Cache Supported.
Write-through Cache Supported.
Supported Memory type SDRAM memory for enhanced performance
Fast Page Memory with Parity for enhanced data
security
Read-ahead Operation Intelligent Dynamic read-ahead operation for
sequential data accessing
Multi-Threaded Operation Yes
Scatter / Gather Supported
I/O sorting Supported. Optimized I/O sorting for enhanced
performance
Variable Stripe Size RAID5:
Optimization for Random I/O (32k), optimization for
Sequential I/O (128k), user selectable.
RAID3:
Optimization for Random I/O (4k), optimization for
Sequential I/O (16k), user selectable.
RAID Expansion:
On-line RAID Expansion Supported.
Mode-1 RAID Expansionadd
Drive
Supported. Multiple drives can be added concurrently.
Mode-2 RAID Expansion – Supported. Replace members with drives of larger
Copy and Replace drives capacity.
Expand Capacity with no
extra drive bays required
Operating system support
for RAID Expansion
Supported in Mode 2 RAID expansion. Provide “Copy
and Replace Drive” function to replace drives with
drives of greater capacity. No need to add another
enclosure for the extra drives.
No. No operating system driver required. No software
has to be installed for this purpose.
Firmware Functionality Specifications B-3