It’s accessible to affix eight SATA SSDs to best avant-garde enthusiast-class motherboards but utilizing sixteen requires appropriate adapter cards. You could use a HBA or Host Bus Adapter card, but this advantage aloof adds the drives to your system, the software agreement and administration comes from Windows.
A accouterments RAID adapter on the added duke adds argumentation amid the arrangement of drives and the operating system. A processor on the agenda runs the RAID, and a ample DRAM accumulation accelerates achievement after demanding the added arrangement components.
We extracted our Areca ARC-1883ix-24 RAID ambassador from accumulator for this review. The ARC-1883 alternation appearance a dual-core RAID-on-Chip processor with a PCIe 3.0 x8-lane host interface. Our agenda was fit with a 4GB DDR3-1866 buffer.
We activated arrays with eight and sixteen drives. The eight-drive arrangement ran in RAID 0 and RAID 5 with a band admeasurement of 64KB. The sixteen-drive arrays ran in RAID 0 and 5 with a 64KB band admeasurement and a RAID 0 application a 1024KB band size.
Sequential Apprehend Performance
In theory, the 1024KB band would bear amazing consecutive achievement but that wasn’t what we begin in practice. The accepted aphorism with RAID configurations has consistently been to use a abate band admeasurement for bigger accidental abstracts achievement and a beyond band admeasurement for bigger consecutive performance. We saw bigger consecutive achievement in our HighPoiint SSD6540 asylum analysis with a 512KB stripe.
The Areca RAID ambassador is the aqueduct in the accumulator arrangement so that’s about what we are testing today but the added apparatus comedy a role. The added accouterments aloof shows what’s accessible with the Icy Dock enclosures.
Sequential Address Performance
The aberration amid eight and sixteen drives shows up autograph data. There is a baby aberration account data, but abstracts writes appearance a abundant beyond aberration amid the arrays and absolutely busy enclosures. The one affair you will apprehension is the acknowledgment on investment. Eight drives in RAID 0 nets us 2,769 MB/s in consecutive writes at chain abyss 2 but acceleration the drive calculation alone gives us an added 1,000 MB/s. The gap increases at college chain depths. This is a case of accepting the appropriate workload to booty advantage of the achievement available.
Random Apprehend Performance
When there wasn’t a solid accompaniment option, and the apple ran on adamantine deejay drives, able accidental apprehend achievement was appropriate about 200 IOPS at chain abyss 1. It was accessible to admission low chain abyss accidental apprehend performance; the bar was already actual low.
With beam the abject achievement has added dramatically. RAID doesn’t admission accidental apprehend achievement over a distinct drive. In fact, RAID controllers are not as able as Intel’s PCH SATA, so chain abyss 1 achievement absolutely decreases.
Random Address Performance
The accidental address tests acquiesce us to see the RAID 5 “write hole”. This is area RAID 5’s back-up decreases performance. The massive DRAM absorber in our Areca ambassador agenda helps the issue, so our accident is beneath than some added cards on the market.
70% Apprehend Consecutive Performance
Mixing reads and writes is a difficult workload for customer brand storage. This is one of the tests area added drives accord users admission to college performance. Even with aloof 20% of the workload advancing from abstracts written, the is a actual ample achievement gap amid the eight and sixteen drive arrays.
70% Apprehend Accidental Performance
The cardinal of drives has beneath of an appulse in accidental alloyed abstracts than the RAID akin acclimated to body the array.
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