Question 1

Does this come with the cable to connect it to another NAS unit?

Accepted Answer

www.synology. com/en-us/products/DX1215II#specs

Packaging Content
    Main Unit X 1
    User's Guide X 1
    Accessory Pack X 1
    AC Power Cord X 1
    Expansion Cable: Infiniband X 1

Question 2

What's the power consumption of this unit?

Accepted Answer

The power consumption of this unit is 51.23 W during access and 21.71 W during HDD hibernation.

Question 3

What's the maximum storage capacity of this NAS system?

Accepted Answer

The maximum storage capacity of this NAS system is 192 TB.

Question 4

What types of hard drives can I use with this NAS?

Accepted Answer

You can use 3.5" SATA HDD, 2.5" SATA HDD, and 2.5" SATA SSD with this NAS.

Question 5

Is this NAS suitable for a humid environment?

Accepted Answer

The NAS is suitable for environments with humidity levels between 5% and 95% relative humidity.

Question 6

Can I use this device to stream media?

Accepted Answer

Yes, the device can be used to stream media.

Question 7

Is this unit compatible with a DS1821+ ?

Accepted Answer

From Synology, DS1821+ is compatible with 5 Bay expansion DX517. Please check out this https://www.newegg.com/synology-dx517/p/N82E16822108489

Question 8

I have a Synology DiskStation DS3617xs...can I back everything up to this unit then do any software upgrades to the DS3617xs. I have a 12 drive RAID 6 with data protection - 127TB storage...it always says to backup the system before DSM upgrades or a file system defrag - I have been too scared(!). Copying the data back and forth would probably sort the defrag....despite RAID 6 it would give me a bit of peace having another backup...anyway can I shift the data here and then upgrade the DSM without worry?

Accepted Answer

No, this is not a stand alone NAS nor does it run its own DSM.  It's basically a DAS, it attaches to a primary NAS and is managed by the same DSM.  If a DSM update fails or the primary NAS fails, the shelf is not accessible.  For your use case, you would need a second stand alone NAS.  If both NAS are Synology, then you could run Shared Folder Sync between the two which uses rsync to backup the data.  I am using this attached to a DS2419+ with two 6 disk SHR1 volumes and it works nicely to expand the storage.

Brand	Synology
Model	DX1215II
Type	Desktop NAS

Included HDD Capacity	Diskless System
Max Capacity	192TB
Drive Compatibility	3.5" SATA HDD 2.5" SATA HDD 2.5" SATA SSD

Power	Power Supply Unit / Adapter: 550W AC Input Power Voltage: 100V to 240V AC Power Frequency: 50/60 Hz, Single Phase Power Consumption: 51.23W (Access), 21.71W (HDD Hibernation)
Power Consumption	51.23 W (Access) 21.71 W (HDD Hibernation)

Temperature	5°C - 35 °C
Humidity	5-95% R.H

Features	192 TB (16 TB drive x 12) (Capacity may vary by RAID types)
Usage	Backup & stream media through personal cloud

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Synology 12 Bay Desktop NAS Expansion Unit DX1215II (Diskless)

Expansion Unit DX1215II

Easily add 12 bays to your DiskStation

Online volume and storage expansion

Simple setup and management

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Dimensions & Weight
Dimensions	10.63" x 11.81" x 13.39"
Weight	19.89 lbs.

Item#: 9SIAFJ8KDW6286