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Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).


Using High Capacity Drives as Single Large RAID-4 / RAID-5 Volume

Get HGST 8TB Ultrastar He8 Hard Drive at OWC.
Also utilized in the 32TB OWC Thunderbay 4 RAID-5 edition.

See the topology overview which discusses general considerations in using four or five or more large hard drives.

Questions? One-on-one consulting is available with Lloyd.

Example: one large RAID-4 volume using four 8TB drives

Four drives in an OWC Thunderbay 4.

This configuration is done with a single OWC Thunderbay 4; it is how OWC supplies the unit pre-configured (though it may be functionally equivalent RAID-5 instead of RAID-4). However, it is implicit that additional drives/storage are needed for nearline and offsite backup.

One huge volume is appealing, but a key issue with one huge volume is backup: MPG advises single-drive backups (non RAID when feasible), which means 8TB (or later 10TB) single drives. A 24TB volume that heads north of 10TB cannot be backed up without an additional 24TB volume (preferably 2 or 3 others for safety!).

Since backing up a 24TB volume requires other 24TB volumes* (preferably three others for robustness and never only one backup!), it can be an expensive proposition with lower redundancy than the multi-volume approach. Plan ahead. See the multi-volume example for an alternate and more flexible approach.

Another issue with one huge volume is organization of files and capacity scaling. Both issues are more manageable with a multi-volume approach, at least if the budget is not open-ended.

TIP: use diglloydTools IntegrityChecker to verify backup integrity.

* The minimum number of backups is two, and preferably three, such as one nearline (always there for daily backups) and two others stored offsite but regularly updated. Hence using a 24TB master storage volume really requires 2 or 3 more backups of 24TB each, a costly proposition.

Finder Info for a 24TB RAID-4 volume via SoftRAID,
using 4 HGST Ultrastar He8 8TB hard drives
SoftRAID view for a 24TB RAID-4 volume, using 4 HGST Ultrastar He8 8TB hard drives
New Mac Pro?

Or iMac 5K or iMac Pro?
Consult with Lloyd ASAP before buying!


System configuration for CPU, GPU, memory, SSD, backup, RAID, optimizing performance, workflow.
For YOUR optimal workflow

Avoid costly mistakes in throwing money at the problem for less performance and/or buying the wrong machine for your own needs!

Remote screen sharing available for RAID, software configuration, etc.

More about 2019 Mac Pro vs iMac 5K vs iMac Pro...


MacPerformanceGuide.com
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SanDisk 512GB Extreme PRO UHS-I SDXC Memory Card
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