Compaq External RAID Controller & Subsystem Infortrend, Руководство по эксплуатации

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Infortrend
B-4
RAID1 128 32
RAID3 16 4
RAID5
128 32
Caching Optimization
•
Cache buffer sorting prior to cache flush operation
•
Gathering of writes during flush operation to minimize the number of IOs
required for parity update
•
Elevator sorting and gathering of drive IOs
• Multiple concurrent drive IOs (tagged commands)
• Intelligent, predictive multi-threaded read-ahead
• Multiple, concurrent host IO threads (host command queuing)
RAID Expansion:
On-line RAID Expansion Supported.
Mode-1 RAID Expansion-
add Drive Supported. Multiple drives can be added concurrently.
Mode-2 RAID Expansion –
Copy and Replace drives Supported. Replace members with drives of larger
capacity.
Expand Capacity with no
extra drive bays required 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.
Operating system support
for RAID Expansion No. No operating system driver required. No software
has to be installed for this purpose.