The HERHSIANG mail (archive) server planning has considered the backup disk SSD/HDD real-time support mechanism when the online disk SSD/HDD fails., MArchive & MDispersion full series can mix and match SSD/HDD, one of the representative works of planning 2020/09 MDispersion H168 and 2023/03 MDS H169 adopt M .2 SSD mixed with HDD.
HERHSIANG Information provides users with a quick access and quick backup mechanism selection mechanism.

Hard Disk Drive (HDD) and Solid State Drive (SSD)
The biggest difference between traditional hard drives and solid-state drives is speed. Currently, SSDs are an unstoppable trend. Nowadays, many people will directly install SSDs even on document machines, let alone game consoles or servers. Users who demand speed will definitely not miss SSD.

However, for users with important data, traditional hard disks are a must. The service life of traditional hard disks is much longer than that of SSDs. There is also a relationship between data storage methods. As long as the data is not modified, the data on the disk will never be lost. changed.

However, the trend of SSD is undeniable. The speed of booting up and executing programs is unmatched by traditional hard drives. The following advantages and disadvantages are explained!

In the past, the hard disk was only 30 MB, but today the hard disk is calculated in TB. With the advancement of technology, the capacity of traditional hard disks has gradually increased, and the price has gradually decreased.

Advantages of traditional hard drives
large capacity
Cheaper than SSD!
There will be some symptoms before failure
Fault Rescue Information

Disadvantages of traditional hard drives
Big size
Difficulty working in shaking environments
noise and vibration
Read speed is slower than SSD

Advantages of SSD solid state drives
fast reading speed
Thin and short
silently
less afraid of shaking

Disadvantages of SSD solid state drives
The disadvantages of SSD, in fact, are exactly opposite to the advantages of traditional hard drives.
The capacity is not high, and if the capacity is large, it will cost more
If it is bad, it will be bad without warning, and it will be more difficult to deal with than the traditional one.
Fault can not rescue data

10G GBIC [optional GBIC (RJ45 / single mode / multi mode)] dual speed 10G&1G

MDS H169 / MDispersion H57TA2D / MD2 / MDA (MDispersion part)

10G GBIC One port (LAN)

MDispersion H91X2D

10G GBIC Dual Port (LAN,HA)

MAchive H57TA / H91XT / MA2 / MDA (MArvhive part)

10G GBIC Dual port (Definition Port 3,4)

The length of the casing needs to be changed, and the casing needs to be replaced together

1U Redundant Power Supply: Dimensions:
W.106 x H.41.5 x L.260/mm

1U case size

Standard:
19" x 1U x 437.20mm (17.21" deep)

Changed specifications:

19" x 1U x 600mm (23.62" deep)

Installed model

MArchive H91XT

MDispersion H91X