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Adaptec AAA-UDMA RAID Controller

Adaptec AAA-UDMA RAID Controller - PCSTATS
Abstract: The controller is the AAA-UDMA, a four-channel UDMA/66 RAID controller supporting up to four hard drives in RAID 0, RAID 1, RAID 0/1, and RAID 5 configurations.
Filed under: Servers Published:  Author: 
External Mfg. Website: Adaptec Mar 30 2001   D. Dee  
Home > Reviews > Servers > Adaptec AAA-UDMA

Conclusions

Although the AAA-UDMA has all the manageability and reliability features you could ask for, its performance with most array types is certainly nothing special, and its RAID 5 performance is unforgivably poor. When Adaptec says it's meant for entry-level servers, they aren't kidding. The only server roles it would be good for are those that would not be limited by hard disk throughput but still require redundancy and high capacity. The only type of server I could see this controller being useful for is a low-level file and print server, since other kinds need much more hard disk performance than this controller can provide. It's simply unacceptable as a workstation solution, since it doesn't provide the performance a workstation needs.

>To be fair, we should remember that Adaptec never intended the AAA-UDMA to be used in anything but small, entry-level servers, so perhaps we shouldn't expect blazing performance in general. Still, I'm making the assumption that anyone reading this article probably isn't looking for server hardware evaluations, and this review is done with the home power user in mind, hence the low overall rating. For business users, the AAA-UDMA is the solution for the very cheapest RAID 5 possible. If you thought about getting this controller because it would provide a RAID array with high performance, think again.
 
For home users, I can only think of a handful of good uses for this controller, partly because it doesn't work with Windows 9x. Presumably, you'd be using this controller on a server or other secondary system that isn't your main computer. One way to use the system with the controller would be as a media file warehouse. With three or four large hard disks, you could store an astonishing number of MP3 or movie files. legitimate ones, of course.
 
Second, it wouldn't be bad for home video storage and editing. Although the performance wouldn't be adequate for high-quality video, any kind of video needs a lot of disk space. However, you could do both of these with a much cheaper software-based IDE RAID controllers like Promise's FastTrak series, IWill's SIDE-RAID series, or integrated RAID controllers on some newer motherboards.
 
I don't know how well these perform, and they don't provide RAID 5 support, but I doubt that they perform worse than the AAA-UDMA, and they cost far less. If Adaptec made an ATA RAID controller with its own RAID chip- that is, not one which has to translate IDE to SCSI and back for use with a pre-existing SCSI RAID chip- it might be worthwhile. But considering its hefty price and sometimes appalling performance, the AAA-UDMA is difficult to recommend to home users unless they have a true need for low-cost RAID 5 and aren't concerned about performance. It's an adequate solution for low-traffic business servers that need capacity and redundancy at the lowest possible price, but it's far from the barn-burner I expected.

Syndicated from http://www.deeztech.com

< Previous Page © 2017 PCSTATS.com Servers News»

 

Contents of Article: Adaptec AAA-UDMA
 Pg 1.  Adaptec AAA-UDMA RAID Controller
 Pg 2.  A little about RAID
 Pg 3.  Initialization time for the array
 Pg 4.  The full specs
 Pg 5.  Three Drives improve performance
 Pg 6.  RAID 0 Performance
 Pg 7.  RAID 1 Performance
 Pg 8.  OS Supported
 Pg 9.  Software management
 Pg 10.  CI/O software
 Pg 11.  RAID 5 benchmarks
 Pg 12.  processor usage
 Pg 13.  — Conclusions

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