All Posts by Date or last 15, 30, 90 or 180 days.
also by Lloyd: photography and

Thank you for buying via links and ads on this site,
which earn me advertising fees or commissions.
As an Amazon Associate I earn from qualifying purchases.

Other World Computing...
B&H Photo...
As an Amazon Associate I earn from qualifying purchases.
Get all the tools you need to upgrade the factory HDD of any 2009-2019 iMac to a larger HDD or a modern SSD.
Upgrade the memory of your 2020 iMac up to 128GB

Pegasus J4: One Part of the Switchover Solution for the new Mac Pro?

One piece of the puzzle for me to solve with the new Mac Pro is how to use my four existing OWC 480GB Mercury Elite Pro 6G SSDs (these are 2.5-inch SATA SSDs).

I don’t really want four separate cases; and neither eSATA nor USB3 are options (four cables and not enough ports for one thing). So these SSDs must be re-housed in a 4-drive case.

Enter the Promise Pegasus J4 Thunderbolt case which houses four 2.5-inch SSDs or hard drives. It became available for sale today at about $390. It has fans, so I have to reserve judgment on noise level, but it looks like a high quality solution, albeit at a premium price (though at the current juncture, mighty welcome).

It works as JBOD or RAID-0 striping or RAID-1 mirroring (software based).

I hope to review a unit in a few weeks. I confirmed with Promise chat support that RAID is done via software (Apple’s Disk Utility), which rules out RAID-5 (one parity drive), but striping or mirroring can be done.

Promise says that if the unit is purchased with drives that it comes preconfigured with RAID-0 striping. Remember that if RAID-0 striping is used, failure of one drive kills the RAID entirely. Keep backups (clone) or use a RAID-1 mirror of a pair of these units.

Promise Pegasus J4 front view
Pegasus J4 rear view
View all handpicked deals...

Seagate 20TB IronWolf Pro 7200 rpm SATA III Internal NAS HDD (CMR)
$630 $360
SAVE $270 | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__