AOPEN AK77 PROA PROMISE RAID DRIVER DETAILS:
|File Size:||32.9 MB|
|Supported systems:||Windows 2008, Windows XP, Windows Vista, Windows 7/8/10|
|Price:||Free* (*Free Registration Required)|
AOPEN AK77 PROA PROMISE RAID DRIVER
There is only one tool that will suit our purposes and that's HDTach. This gives us a reading over the whole array and not just snapshots. This seems about right for AOpen AK77 ProA Promise RAID single drive in sustained transfer mode. Now for a 2-disk RAID0 array. The read speed goes up approximately double while the write speed goes down slightly.
This seems consistent with other RAID controllers. AOpen AK77 ProA Promise RAID for a 32K stripe size. This gives a slightly better write performance at the expense of read performance. How about a 64K stripe size? We can see that 16K is the best stripe set we can confirm this with many more tests but we'll spare our readers the gory details and we will stick with this. We no longer have access to 4 identical drives so took a trip to a data center nearby name withheld to avoid getting our friends in trouble where a server using a 4-disk RAID0 array on an SX was in operation. We couldn't run HD-Tach as this requires non-partitioned drives but ran some other benchmarks. Performance with 4 drives was superb with sustained rates averaging about 3 times that of the single drive graph above. RAID5 performance was also excellent and the parity overhead was barely noticeable with the card in AOpen AK77 ProA Promise RAID bit PCI slot.
Conclusion Eventually this card has shown us why Promise engineers have so much faith in it.
VIA KT266A Motherboard Roundup - January 2002
Performance is very good in all areas and Windows XP seems to fly along thanks to the addition of cache memory. As usual promise include everything needed except for the drives themselves. The card itself is quite small and has four Serial channels. The low number of surface components indicates a highly integrated design.
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Although four channels are present the controller will happily work with only one drive, making it a useful upgrade AOpen AK77 ProA Promise RAID S-ATA that allows for future headroom just add more drives. The four connectors are evenly spaced and give the impression of sparseness on the card. Here's a screen showing the configuration of the test system: These drives are aimed at the enterprise storage market and come with a 5-year warranty indicating the confidence Maxtor have in this product.
AOpen AK77 ProA Promise RAID In practice, those purchasing this product AOpen AK77 ProA Promise RAID not be able to match as closely as this or may not desire to if they want to purchase the fastest S-ATA drive possible so readers will need to remember the basics of using RAID on non-matched drives. These basic rules stipulate that performance is limited to N times the speed of the slowest drive and total size is limited to N times the capacity of the smallest drive where N is the number of drives in the array. In practice these are theoretical maximums that may be limited by other factors. Here are the 4 drives we managed to pull together showing the ease of connectivity to the card: There's hardly any clutter of cables even with 4 drives.
Serial cables plug easily and securely into the card without blocking airflow. The above picture clearly illustrates how little space is taken up by the connectors of S-ATA drives. The drives used are all Maxtor GB S-ATA rpm 8MB cache ones that's a Terra-byte of storage which may seem outrageous even by today's standards but then we remember AOpen AK77 ProA Promise RAID Gate's famous speech telling us we will never need more than K memory in our PCs and must remind ourselves that no one knows what future requirements will be.
The drives with AOpen AK77 ProA Promise RAID black data connectors are plugged into the Promise controller and the ones with the red connectors are plugged into the onboard RAID controller. RAID1 mirroring testing will be conducted at default stripe size as we are not given the option of changing this parameter. A full size graph can be obtained by clicking on them. IDE, Floppy and IDE RAID (AK77 Plus(A) Only) Connector. Thank you for choosing AOpen AK77 Pro(A) / AK77 Plus(A) . The AK77 Plus(A) motherboard has added an onboard PROMISE® FastTrak Lite IDE RAID.
Aopen AK77 Plus: Now It's Stable, Continued. Aopen AK77 Plus: RAID functionality: The Promise Ultra "Lite" is located on the board.
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