DS920+, DS420+ And DS720+ Compatible M.2 NVMe SSD

Last updated on 14 Jun 2020 📧 Subscribe

DS920+, DS420+ And DS720+ Compatible M.2 NVMe SSD

The most popular M.2 cache SSD for DS920+, DS420+ And DS720+ is Samsung EVO PLUS :

256GB – US UK

512GB – US UK

Determining the SSD Cache and Monitoring SSD Cache Performance
The aggregate size of hot data and appropriate cache size can be determined with the help of Synology
DiskStation Manager’s SSD cache Advisor, where the number of unique files1
accessed in the last seven days
and their aggregate size will be displayed. For example, if the accessed file size is 200 GB daily, the
corresponding SSD Cache size should be 200 – 300 GB to ensure that all hot data can be accommodated

SSD Cache on Synology NAS
Read cache can be created with only one SSD. If larger read cache or read-write is required, two SSDs of the
same model and make must be installed in the server1
. For read-only cache, the SSDs are configured using
RAID 0. For read-write cache, SSDs are configured using RAID 1 to ensure data integrity in case one SSD fails.
Once installed, each SSD Cache can be attached to any one volume or iSCSI LUN (block level) in the system. If
a volume has SSD Cache enabled, the iSCSI LUN (file level) on the volume will also benefit from the increased
performance.

Writing Data to SSD cache
Synology SSD Cache employs a write-back cache approach in read-write cache to accelerate write operations.
When the Synology NAS receives a write request, it stores the data on SSD cache blocks and then
acknowledges the write operation to the application server.

My personal choice is Samsung 960 EVO and 970EVO. Samsung also offer 970 Pro for extra wear and tear in big business with hundred or more people constantly accessing data and therefore rewriting the cache all the time.

The synology DS918+ NVMe SSD Slot From –

Intel

SSDPEKKA256G701

DC P3100

PSF119D

256GB

Samsung

MZ-V5P512BW

950 PRO

512GB

Samsung

MZ-V5P256BW

950 PRO

1B0QBXX7

256GB

Plextor

PX-256M8PeGN

M8PeGN

1.02

256GB

Plextor

PX-128M8PeGN

M8PeGN

1.01

128GB

Samsung

MZVPV512HDGL

SM951

512GB

Samsung

MZVPV256HDGL

SM951

256GB

Samsung

MZVPV128HDGM

SM951

BXW7300Q

128GB

Samsung

MZ-V7P1T0

970 PRO

1B2QEXP7

1TB

Samsung

MZ-V7P512

970 PRO

1B2QEXP7

512GB

Samsung

MZ-V7E2T0

970 EVO

1B2QEXE7

2TB

Samsung

MZ-V7E1T0

970 EVO

1TB

Samsung

MZ-V7E500

970 EVO

500GB

Samsung

MZ-V7E250

970 EVO

1B2QEXE7

250GB

Samsung

MZ-V6E1T0

960 EVO

2B7QCXE7

1TB

Samsung

MZ-V6E500

960 EVO

500GB

Samsung

MZ-V6E250

960 EVO

250GB

Samsung

MZ-V6E250BW

960 EVO

1B7QCXE7

250GB

Toshiba

THNSN5512GPU7

XG3

57XA4104

512GB

Toshiba

THNSN5256GPU7

XG3

57XA4104

256GB

Toshiba

THNSN5128GPU7

XG3

57XA4104

128GB

Western Digital

WDS100T2X0C

Black

101110WD

1TB

Western Digital

WDS512G1X0C-00ENX0

Black

B35500WD

512GB

Western Digital

WDS500G2X0C

Black

500GB

Western Digital

WDS256G1X0C

Black

256GB

Western Digital

WDS250G2X0C

Black

101110WD

250GB

Source: https://global.download.synology.com/download/Document/WhitePaper/Synology_SSD_Cache_White_Paper.pdf

Here is how to install M.2 SSD

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