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HDD for Synology DS1515+

Posted on 2014-12-14
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Last Modified: 2014-12-19
Hello Experts,

Finally I have ordered a DS1515+ NAS for Homelab, and now I need to decide which HDD to go for it.
I will be using NAS for vmware and hyper-v lab.
I have checked https://www.synology.com/en-us/compatibility/hd/DS1515+
went through some of the NAS drives and they are reasonable wrt cost. enterprise class are going to put a big hole in pocket!.
WD Red run at 5400 RPM, I believe this will not give much IOPS to satisfy the need to run multiple VMs.

with your experience  please suggest.
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Question by:Vaseem Mohammed
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by:Andrew Hancock (VMware vExpert / EE MVE)
Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 40499814
Make sure what ever you purchase is on the Synology List, we've had disks not on the list, and we've had issues with the NAS, failing them all!

There are new features in the Synology 5.x OS, that allow the use of SSDs for cache, you will need at least two SSDs, but by using two SSDs, you can use slower HDD. e.g. 5400.

But ideally, it will be a combination of RAID selected, and fast disks, e.g. 7200 rpm disks, and were you going to use NFS, less overhead compared to iSCSI.

Make sure you also enabled Jumbo Frames, on ESXi, network and NAS.

HOW TO: Enable Jumbo Frames on a VMware vSphere Hypervisor (ESXi 5.0) host server using the VMware vSphere Client
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by:Vaseem Mohammed
ID: 40499872
Hi Andrew,

I have no plans to go with SSDs.
The data on NAS will not be of much important as I will be using it for lab.
I am planning to use 2 set of RAID0, so that I can get max speed out of RAID and HDD.

Yes, I will keep in mind to enable jumbo.

Did not work on NFS, but read about it, does it really performs better than iSCSI?

For this setup I am confused with WD Red NASware 2TB and WD Black Desktop 2TB

WD Red has not info of RPM except they says Intellipower, but exactly at what speed it will work or the speed will vary as the workload increase or decrease.
What I understand by looking at storagereview for WD Red at http://www.storagereview.com/western_digital_red_nas_hard_drive_review_wd30efrx
under 4K Random Transfer R/W

comparing with WD Black 4TB desktop at http://www.storagereview.com/wd_black_4tb_desktop_hard_drive_review_wd4003fzex
under 4K 100% R/W

WD Black is giving more IOPS.
Also these stats are for HDD more than 2TB, if am not wrong seektime will add up as capacity increases.

I need to find if someone has tested WD Black in synology and what throughput they got., its supported for DS1513+ not listed in 1515+
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Andrew Hancock (VMware vExpert / EE MVE) earned 500 total points
ID: 40499896
SSDs in the Synology are used for read and write buffer, which is hybrid storage.

So you will get more IOPS for NFS and iSCSI, than using traditional HDD are their own.

NFS can perform better than iSCSI, because of lower overhead, no encapsulation of SCSI traffic, and the biggest issue with the Synologies, is the Atom processor, is quite slow, and becomes the bottleneck.

We use WD Reds in our Synologies, and NFS with VMware.

lower power, and it speeds up and down.

I would stick to the lists for what drives to use.
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