More details on ACARD-9010

Pic from acard.com

ACARD RAM disk comes in two models: ANS-9010 (eight DDR2 slots) and ANS-9010B (six DDR slots). Both models come with a CF slot and battery that "enough to finish the backup". I'm guessing it is not sufficient to retain data up to 10 hours like in Gigabyte i-RAM. However with my i-RAM battery died after only 10 months, I better assume the data dies when power outage.

In ANS-9010 model, it states upto 400MB/sec transfer rate. Since SATA2 support up to 300MB/sec, ACARD uses two SATA2 ports in RAID to achieve 400MB/sec (I'm just guessing here.)

Overall, it is better alternative to Gigabyte i-RAM Box which only have four DDR slots (DDR2 is cheaper and power efficient than DDR) and HyperDrive which has eight more expensive registered ECC memory slots.

Link

i-RAM RAID videos

Windows booting on HyperDrive4

HdTune benchmark of 4x Gigabyte i-RAM RAID

Here is another 4x Gigabyte i-RAM RAID setup

And here is 8x Gigabyte i-RAM RAID setup (886MB/sec)

See also:

• i-RAM RAID Cage

Volatile memory based SSD roundup

ACARD ANS-9011

• Four DDR2 SO-DIMM memory slots (8GB Max)
• However it supports up to 32GB Max if 8GB memory stick ever available
• SATA/SAS interface
• 800MB/sec
• Hard drive/CF for backup

My previous posts:

• Finally something better than i-RAM2?

Gigabyte i-RAM

• SATA/150 interface (I benchmarked around 120MB/sec read speed)
• Four DDR1 memory slots (4GB max)
• Powered by PCI standby power even during computer is off

My previous posts:

• Gigabyte i-RAM battery replacement
• Four i-RAM with wooden mounting cage
• Dead i-RAM battery

Gigabyte i-RAM 2 RAMDiSK BOX

• 8GB Max 4GB Max
• Four cheaper DDR2 expensive DDR1 memory slots
• SATA/300 SATA/150 interface speed
• No standby power during power off

My previous posts:

• Gigabyte i-RAM 2, GO-RAMDiSK-BOX, on sale?
• Gigabyte i-RAM news: They changed the name

HyperDrive 4

• 8 DDR1 memory slots
• 16GB with 2GB Registered ECC memory stick
• 126 MB per second
• IDE/SATA interface

My previous posts:

• Hyperdrive 4 revision 2

DDRdrive

I'm not sure whether the company is still working on prototype or they even exists anymore.

• PCI-E x1 interface
• Four DDR1 slot
• Power only from external power supply?

HyperDrive4 on Gearlog

Didn't see GearLog's coverage on HyerDrive4 yesterday. HyerDrive4 is too expensive and i-RAM's isn't going anywhere. I think they'll be killed by flash based disk this year.

GearLog and HyperDrive4 homepage