miniStack (All Versions): Drive Type Compatibility
LAST UPDATED: May 2018
OWC MINISTACK – no known capacity limit at this time.
NEWERTECH MINISTACK (white plastic cover, also called "V1")
– accepts PATA drives up to 750GB in size.
NEWERTECH miniStack V2 – acce...
Qx2 (All): Formatting Results in "Invalid Request" Error
This may be due to the drive format you're trying to use. The
recommended format for OS X is Mac OS Extended (Journaled). Try the
steps below to see if they resolve the issue.
1. Launch Disk Utility.
2. Highlight Qx2 drive icon. It should say some...
Qx2 (USB 3.0): Arrays, Rebuilds, and Formatting Options
This document addresses some common points of confusion. Please use
see the user manual for more detailed information.
Qx2 (All): Replacing a Failed RAID Drive
If one of the drives in your Qx2 has failed, OWC recommends you
replace that drive with a new drive of identical make, model, capacity
(and if possible) firmware. The process for doing this is covered in
detail in your user manual.
USB 2.0 Version
Qx2 (All): Adding Drives to an Existing RAID
It is not possible to add more drives to an existing Qx2 RAID without
reformatting the logical volume.
To add additional drives to a new RAID array, please consult the user
guide for your Qx2 mode:
USB 2.0 Version
Envoy Express (Thunderbolt): SSD Compatibility Notes
RELEVANT PART NUMBER: OWCTB3ENVXP00
Some third party M.2 SSDs may not support external booting when in an
Envoy Express (Thunderbolt) enclosure.
Only one drive series has currently been identified as having the
inability to boot...
Storage Solutions: OWC Disk Performance
As of Windows 10 v. 1809 the default disk removal policy is ‘Quick
removal’ instead of ‘Better performance’.
“Quick removal” is a safer option as it ensures connected disks
can be removed directly from the Windows system. However, users may
experience a ...
OWC Drive Enclosure LED Function with Select 3rd Party Drives
RELEVANT PART NUMBERS: OWCT4MS6000 "_miniStack STX_", OWCTB3ENVXP00
"_Envoy Express_", & OWCSACL1M "_Accelsior_ _1M2_"
Select drives may disable the LED function of the relevant part
M1 vs. Intel Macs: External Storage Performance
In a post on The Rocket Yard Blog , Get Up to 67% Faster External
Drive Performance With Your M1 Mac
we promised to keep looking into the Thunderbolt drive speed issues.
OWC Drive Enclosures: M.2 Drive Compatibility
NUMBERS: OWCENVPROC2N00, OWCT4MS6000, OWCT4MS6H02N00, OWCT4MS6H08N00, OWCT4MS6H14N00
The Crucial P5 M.2 drive series has been discovered to not be
compatible with some of our drive enclosures:
OWC ENVOY PRO EX: OWCENVPROC2N00
Hard Drive: Expected and Unexpected Drive Noise
An external hard drive will make a range of sounds during regular use,
which are perfectly normal and expected. There
are also environmental elements which can impact sound
* In an otherwise quiet room, HDD sounds can
get exaggerated. ...
OWC U2 Shuttle: Accessing Drives and Thermal Pad Warning
NUMBERS: OWCU2SHUTTLE, OWCU2SHUTTLE01, OWCU2SHUTTLE02, OWCU2SHUTTLE04, OWCU2SHUTTLE08, OWCU2SHUTTLE16, OWCU2SHUTTLE32
Usage over time may result in the thermal pad of the U2 Shuttle
sticking to the drives. Users when opening the U.2 Shuttl...
Thunderbolt Daisy Chain
Daisy chaining over Thunderbolt has a six-device maximum per bus.
Refer to the manufacture specifications of your host to determine the
number of Thunderbolt buses and associated ports.
While Daisy chaining multiple Thunderbolt devices does allow for
Power Adapter Troubleshooting
A devices power adapter should be considered for troubleshooting if
issues are being experienced. These issues can include, but not
limited to, no power to the device or inconsistent recognition of the
device by the host.
* Troubleshooting expected po...
Mercury Pro LTO: Fan Upgrade Guide
1.1 Opening the Mercury Pro LTO
1.2 Removing the SAS Card
1.3 Removing the Existing Fans
1.4 Changing the 12VDC Power Cable
1.5 Adding the New Fans
1.6 Adding the SAS Card
1.7 Closing the Mercury Pro LTO
macOS 10.14 "Mojave' Incompatible SSD List
The following SSDs, as of February 1, 2021, have been tested by OWC
and shown to be incompatible with Mac systems running macOS 10.14
'Mojave' and later regardless of how they are connected to the host
The behavior of each drive can vary but i...