Can I change the RAID type after installing additional disks? and is it possible to swap from SHR to RAID 5 without re-installation of DSM OS
584930
There would be no reason to re-install the DSM OS when changing RAID types. However you would lose all of the data on the RAID array when you switched.
584931
I am pretty sure that the DSM OS stays static, of course if you change the flavor of RAID that you are using the drives will all be erased when the new array is created. Part of the reason I chose Synology Hybrid RAID over the other standards is the ability to add more drives or to replace existing drives with larger ones without having to redo anything or move data off while creating a new array. Anyway, The operating system should remain, but if you change RAID type, the array will be erased. I hope this helped.
584932
The only configuration changes you can make without losing your data, are adding more drives to an SHR volume.
2235680
Nope, that's only possible if you use XRAID (let the NAS auto handle the RAID levels). If you manually configure it as RAID1 initially using FlexRAID, you don't get the option to convert it to a RAID5 when you add in another disk later. You'll need to use at least 3 HDD to start with RAID5.
1877963
yes. And it requires setting a jumper in the enclosure to which raid type you want.
188306
yes, I have two of these boxes, & I set them to either raid 0 or leave it at the default which is JBOD. Currently, I buy a lot of Seagate Barracuda 4 terabyte drives, and swap them in and out of these boxes per my various jobs. I work off of the one box that I have at 16 terabytes raid 0, & I back up to the JBOD single drives. it all works fine, & I configure everything using Disk Utility.
750549
The drives can be different sizes, but if you want the redundancy of the Raid architecture they should be the same size. You can run them as standalone non-raid drives and then they can be different sizes. SATA drives are required.
593836
Hi, that depends on the configuration of your drives, if it raid 0,1 or 5, then it should see as a single drive, else, it wont be possible to see all the drives
2098070
No. Once you do the initial setup, if you add a second drive you can not set it up to run in Raid 1 without having to format the drive.
1678777
if you mean that you are working with less than 8 drives, yes, you can add other drives, one at a time (the system will do a rebuild of the array when you effectively add the new drive). Beyond 8 drives, you can only add other drives with the expansion unit. That means the USB and esata interfaces cannot be used for drives that are meant to be part of a RAID array. External drives (through usb and esata) can only be shared on their own, as individual volumes. And yes, all raid options are supposed to work with any number of drives. I started my array with 6 and soon went to add a 7th drive.
663097
As long as the new HDDs are greater or equal to the lowest size of the original HDDs then no, you do not have to erase the data. The software adjust the RAID volumes over the new additional HDDs. You can never add HDDs that are lower in size to the original RAID set up no matter which device you are using.
91779
Yes either raid 0 or raid 1 is possible. I would not recommend this product though.
663104
No you should not have to do so. Just add the disk(s) and configure through Disk Management in DSM, Visit www.synology.com for kore information.
1515539
SHR, for sure. It provides all the benefits of traditional RAID 5 but with more flexibility. Once we looked into SHR we didn't even consider using RAID 5.
1392670
Yes, the default is Synology Hybrid Raid (SHR) which is like RAID1 but more versatile.
1895541
If you are set on Raid 1, it will limit you to 4 TB because the other drive is duplicating #1. If you go into your WD My Cloud you can change from Raid 1 and obtain full use of the aggregate 8 TB if that is what you want.
2250250
The one I bought has hardware raid. I have 4 * 1tb drives installed configured as RAID 5.
924550
My understanding is you need to use drives of equal or greater side. I would check with Synology support to see if anything has changed.See below:Can the SHR Volume accept drives of smaller capacity once a SHR Volume has been created?For clarification, if starting out with a SHR Volume utilizing 1TB drives, then all drives which are added or replaced to the SHR Volume must be equal or greater than 1TB. A 500GB drive cannot be added into an existing SHR (or Classic RAID) Volume, and have that storage pool of the smaller drive be utilized within the volume.
1408235
Depends on what is the desired effect. DS413 holds 4 drives and can only use DX513 as external storage (i.e. not fully). DX513 is ideal for adding drives to existing fully compatible systems (not those limited to external storage) when they run out of drive bays; the resulting RAID volumes will span across physical modules in the sense that when a compatible Synology system with N bays adds a DX513, it can have an N+5 drive array as a single volume (or as multiple volumes). A new DS414 will still have only four drive bays (same as your current DS413) so you would not gain more storage bays by replacement of DS413 with DS414. For example, with a DS713+ and a DX513, you can have a 7-drive array. Synology compatibility list is here https://www.synology.com/en-global/products/DX513#spec