Power Recovery: Sync with the paired DiskStation (Default Mode)
Power Frequency: 50/60Hz, Single Phase
Power Consumption: 45.1 W (Access), 16.5 W (HDD Hibernation)
Synology Disk Station DX513 5-Bay Expansion Unit for Increasing Capacity of the Synology
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Most Helpful Customer Reviews
I used to run a Windows Home Server setup, and this is MUCH easier to work with and add drives to - especially after Microsoft removed the Drive Extender feature in WHS 2011. I highly recommend Synology devices to all my friends - and even if this unit is out of your price range, there are lower cost units that don't hold as many drives that perform just as well.
I'd say the only possible downside (if you would even call it that) is the amount of time it takes the unit to ingest additional drives. I have 12 drives in the unit currently (Using the DX513 expansion module as well) and it takes about 24 hours to add an additional 3TB drive. BUT, this is a ONE TIME ordeal and the system is accessible and usable the entire time. Other reviewers have mentioned the long delay, but they aren't understanding what the system is doing - It's formatting it, then running a consistency test/testing the drive for errors, and then migrating+balancing data from all the other drives across...
Just so you don't think I ONLY write 1 star reviews...since this is next in the queue and I, actually, LOVE SYNOLOGY, I'll write a glowing review of this.
I have over 26TB of data I have to access...tell me that's not INSANE!...RIGHT?
Anyhow...I started with a DS1515....should have been an 1800 series model...with the, what 8 drives...but I didn't need much then.
Rock solid...couldn't be happier. I've bought TWO (2) of these expansion units. Set up was easy...just takes FOREVER for the drives to initialize. Then, of course, I live daily with the dread that the system will fail...they have in the past...and all my data will be gone. That's why I've backed everything up on external hard drives...MORE INSANITY...who the heck needs all this storage??? I do!
Anyhow...remember...you can only add TWO (2) of these units to a DS 1515, then you have to buy a whole new disk array...which I probably will in the future anyhow. Then this set up will be my...
If you have a compatible device that's full, then this is a no-brainer. Yes, it may be expensive if you consider it to be just another set of slots and a power cord, but that's selling the architecture short.
Synology is tops for SMB NAS--features, performance, and usability. Price, not so much, but if you're looking to save money, you're not looking at Synology devices anyway.
A few things that contradict the PDF directions from my experience (and verified by Synology support):
1) The documentation says that you should insert the eSATA plug with the "eSATA" text facing up. At least in my experience, the cable simply didn't go that way; I had to insert it with the "Synology" logo facing up on both the master device and the DX513. Worked just fine.
2) If you boot up the master device with ZERO disks in the DX513, the 513 will briefly power on, then shut itself down, perhaps to save power, I'm not sure. The DX513 will...
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