I am planning to upgrade my 4 Tb 5400 rpm WD Red drives (in SHR) to either 10 Tb 7200 rpm WD Red Pros or Golds.
I’d love some advice whether it’s better to go with the Red or Gold. The red has twice the cache, but other than that not sure what the differences are. I’m running a Synology DS718+.
@ChuckPa or anyone else’s feedback would be much appreciated! Thanks!
WD Gold (7200 RPM) has a 5 year (maybe longer) warranty
WD Red Pro (7200 RPM) has a 5 year warranty.
WD Red (5400 RPM) has a 3 year warranty.
I personally do not see any benefit going Gold drives because Synology NAS units are not Enterprise grade nor do they have the horsepower to push the drives that hard.
I have gone to Red Pro for the performance (Plex Database) improvements.
Rotational latency is decreased 33% by upgrading to Pro drives. This is noticeable with database operations. You won’t see it when actually streaming.
The speed of read and writes of the array will be limited by the performance of the 5400RPM drive if you plan on using RAID and not JBOD. As the old saying goes, “A chain is only as strong as the weakest link.”
@Achilles, how would I be able to use a 5400rpm and 7200rpm drive in a 718+ and take advantage of the faster drive for Plex database reading, DSM operations, etc?
That is correct. @ChuckPa can confirm where the PMS data is stored. Ideally you want it on the drive with less latency for more IOPs—this would be the 7200RPM.
DSM takes an equal part of each drive for DSM (root and swap paritions) first. The remainder, which is partition 3, is available for user data. DSM’s portion is mirrored onto each drive. This means you can boot DSM from any single drive. The data volume will show as Crashed but DSM will be live
None of the partitions are hidden.
Your first volume (/volume1) will be those drives DSM defines first. It does a simple sequential assignment of volume ID. /volume1, /volume2, etc etc.