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Author
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Topic: DOREMI SHOWVAULT HARD DRIVES
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Carsten Kurz
Film God
Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009
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posted 04-27-2018 07:13 PM
- yes, 2TB is fine. With the latest software release, 3*4TB drives are possible. If you have a 2k4 chassis with 4 RAID slots, even 4 drives are an option.
- Doremi/Dolby has a list of approved drives. Other drives will work as well, but you may run into trouble if your unit is still under warranty, as the Doremi log analyzer will complain about these non-approved drives. The ShowVault will still work fine if you buy suitable drives. They do not need to be strict enterprise drives, but should be NAS compliant. WD RED e.g. work well and are not too expensive.
http://www.film-tech.com/warehouse/manuals/DOLBY-DRIVE-DEC2016.pdf
- You may change all drives at once, but you will lose your content then.
If you want to benefit from the larger drives, a full raid reinit is necessary. You may need to backup your content first to a separate drive or computer through LAN/ethernet, then reinit the new RAID, then restore your content by reingesting it. That's usually no big deal for a 3*1TB unit. These operations usually take a few hours, so it's advisable to perform them over night.
- Carsten
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Leo Enticknap
Film God
Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000
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posted 04-29-2018 11:27 AM
It's available to download on dolbycustomer.com.
However, as noted in this thread, it's only essential to use drive models on the approved list if the server is still under warranty and you want to replace them as a preventative maintenance measure rather than because one has gone bad (if one goes bad, it should be replaced under the warranty).
If the server is not covered by a Dolby warranty, then as long as you use drives branded as enterprise or for NAS use (not "desktop" or similar), you should be OK. There are various theories and opinions out there as to the difference between these drives, and the closest to a consensus is:
"Desktop" or similar drives are given the lowest extent of QC checks at the factory, and their firmware optimizes them for standalone use.
Drives branded as being for NAS use are slightly more expensive than desktop ones, but not as expensive as "enterprise" ones. The hardware QC is probably similar to that of desktop drives, but their firmware is optimized for use in a RAID.
Enterprise drives - more extensive factory QC (and possibly better quality spindle bearings, though claims have been made either way), and optimized for RAID use.
The only other thing that might be worth pointing out is that drives badged as being for "archival" use (essentially, in write once, read many type applications) use a technique called shingled magnetic recording, and are no good for use in DCP servers. You can spot them by the simple fact that they will appear to be much cheaper than a drive of that capacity should be. For example, 8TB drives of this sort go for around $200. Host managed ones simply won't work in a DCP server, and device managed ones will have an unusably slow write speed.
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