Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Get up to 16x more storage and 2x the speeds of the original drive
Handpicked deals...
$3698 $2998
SAVE $700

$2397 $1897
SAVE $500

$1199 $898
SAVE $301

$1299 $1169
SAVE $130

$4499 $3999
SAVE $500

$1399 $1099
SAVE $300

$1499 $1299
SAVE $200

$4499 $3149
SAVE $1350

$2299 $1599
SAVE $700

$2498 $2198
SAVE $300

$1799 $1379
SAVE $420

$2998 $2498
SAVE $500

$2199 $1999
SAVE $200

$430 $220
SAVE $210

$3399 $2299
SAVE $1100

$6299 $3599
SAVE $2700

$398 $278
SAVE $120

$1499 $1019
SAVE $480

$1279 $719
SAVE $560

$1699 $1549
SAVE $150

2018 MacBook Pro
$6299 $3599
15-inch 2.9 GHz Intel Core i9 6-core, 32GB, 4TB SSD, Radeon Pro 560X

Fantastic MBP at a great price!
LIMITED QUANTITY available.

RAID-5 Performance with SoftRAID 5

RAID-5 offers fault tolerance against a drive failure. Performance at least on reads should be equivalent to a RAID-0 stripe with one less drive, e.g., the performance of a 4-drive RAID-5 should be similar to a 3-drive RAID-0 stripe.

See also SoftRAID RAID-4 / RAID-5 Performance with Heavy CPU load.

Tested with very fast hard drives.

Performance of RAID 5 with 4 or 5 drives

Performance is outstanding, faster than many hardware RAID-5 solutions.

With one OWC Thunderbay, a 4-drive array can be created. Addition of a 5th drive is possible using another Thunderbay, which raises the read performance, but does not improve the write performance. That behavior might be improved with the release version.

Tested with DiskTester on the late 2013 MacBook Pro in dual OWC Thunderbay enclosures, each on its own Thunderbolt port. SoftRAID 5 beta.

disktester run-area-test --iterations 5 --test-size 4G --delta-percent 5

RAID 5 performance with 4 and 5 hard drives, SoftRAID 5 beta

Performance with transfer size

Performance varies by transfer size; smaller transfer sizes start losing any multi-drive benefits (stripe size).

Transfer sizes exceeding 32MB are likely unrealistic for real applications.

disktester run-sequential-suite --iterations 3 --starting-xfer 128K --test-size 4G --xfer-steps 4

RAID 5 performance with 4 hard drives vs transfer size, SoftRAID 5 beta

Performance of RAID 5 with 8 drives

Using dual OWC Thunderbay units and two Thunderbolt ports.

Performance is outstanding for reads. Write performance is gated to ~500MB/sec, but that might change with the release version. Consistency for both is excellent.

Tested with DiskTester on the late 2013 MacBook Pro in dual OWC Thunderbay enclosures, each on its own Thunderbolt port. SoftRAID 5 beta.

disktester fill-volume --xfer 4M

RAID 5 performance with 8 hard drives, SoftRAID 5 beta

MacPerformanceGuide.com
View all handpicked deals...

Nikon AF-S NIKKOR 24-70mm f/2.8E ED VR Lens
$2397 $1897
SAVE $500

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__