Areca PCI Express 24 Port SATA RAID Controllers
Anh Tuan Huynh
August 15, 2006 3:24 PM
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Areca's 24-port SATA controller - Image courtesy HardwareXL
Would you like 12, 16 or 24 ports?
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Areca’s new PCI Express SATA II RAID controllers
. The new Areca SATA II RAID controllers are available in three models—ARC-1230ML, ARC-1260ML and ARC-1280ML with 12, 16 and 24 SATA II ports respectively. These Areca SATA II RAID controllers will also support mini SAS connectors by allocating four SATA II ports too. There’s also an ARC-1280 model that lacks the mini SAS capabilities.
The PCI Express x8 based Areca SATA II RAID controllers are based on Intel’s 81341 I/O processor clocked at 800 MHz. One 240-pin DIMM slot is available as a cache and comes with 256MB of DDR2-533 ECC. Memory can be upgraded to 2GB with another DDR2 memory module. Non-ECC memory modules are supported as well.
RAID levels 0, 1, 1E, 3, 5, 6 or JBOD are supported. Native command queuing is also supported. The Areca SATA II RAID controllers also support staggered spin-up and spin down when hard drives are not in use. An Ethernet port is also available for management purposes too.
Availability is unknown as the Areca website still states the controllers as “Coming Soon.” Pricing should be fairly high as expected of server-class SATA II RAID controllers.
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RE: RAID 1E
8/15/2006 4:13:33 PM
I don't think so. Usually when you see an E on a RAID level it refers to a hot standby. If one disk fails RAID will automatically start rebuilding the array on the hot spare.
In that context I would assume raid 1e involves three disks. Two for the mirror and one standby. If one of the mirrors would fail the controller would rebuild the mirrored array using the hot spare.
RE: RAID 1E
8/16/2006 2:33:00 PM
AFAIK existence of a hot spare has nothing to do with the RAID level.
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