Mirroring functional Dual HDD Back-Up System- Prevention of data loss due to tool crash (SCSI/IDE⇒SATA conversion function equips)【Contact】
KYODO INTERNATIONAL INC.
http://www.kyodo-inc.co.jp/
2-10-9 Miyazaki Miyamae-ku, Kawasaki-shi,
Kanagawa-ken, 216-0033 Japan
TEL:+81-44-852-7575 FAX:+81-44-854-1979

email:denshi@kyodo-inc.co.jp

History of HDD standards (Reference)
Transition of HDD datatransfer standards（SCSI type）
Almost impossible to procure in the market.

SCSI（IDE type）

1980 (Golden age)

IDE

Japanese semiconductor
factories start-up era (6” & 8”)・IDE type HDD available in the market apt tobe larger volume and incompatible to old PC.

・IDE type HDD is totally incompatible to PC
with SCSI interface.

1990 (Golden age)

“Dual HDD” is an alternative to above
legacy HDDs

SATA
2000-Now
Present standard(SATA type)・SATA type HDD is standard HDD broadly used contemporarily inworldwide and will have been procurable in low price for long period(market price is approximately JPN 10,000).
・SATA type HDD is not to mention incompatible to PC with SCSIinterface.

About HDD crash
Decrepit equipment used for 10+ years has high probability of crash due to HDD failure.

Number of file server disk crash (Researched by maker)
Incidence of HDD
crash dramaticallyincreases after 4 years
usage (reference).

Monthly usage

Above data shows that HDD is a kind of consumable part. Unless user
replaces HDD regularly, probability of sudden machine crash increases
proportionately.

Typical HDD trouble & example of improvement
Number of HDD trouble during past 3years (actual figure at the customer)※HDD trouble shooting cost (by equipment maker)◆ Equipment A (CVD): example
SCSI type HDD price ：JPN 350,000.OS installation & labor cost ：JPN 500,000.Total amount ： JPN 850,000.-

HDD caused troubles /entire troubles

Rate

Before 1 year

39 / 1170

3.33%

Before 2 years

19 /1141

Before 3 years

15 /1072

Improvement

1.40%◎ By installation of Dual HDD
HDD price (1pc)：JPN 15,000.st
Dual HDD (1 unit)：JPN410,000.Total amount ：JPN 425,000.JPN 410,000 is initial cost of Dual HDD system.

◆ Equipment B (IMP): example

HDD unit itself is irreparable so customer need toinvest to new system.

1.66%

JPN 425,000 reduction is achievable !

Customer has to pay the price for above total fee
whenever HDD trouble occurs.

New PC price：JPN 8,000,000.Technical fee：JPN 2,000,000.Total amount ：JPN 10,000,000.-Increase

Next time, only JPN 15,000 is required during HDD
replacement.

Improvement

Customer can replace HDD very easily while
equipment remains running.

Avoidance of high expense is viable !

Production loss in case of HDD crash(Indirect cost)
When HDD crashes, down-time due to cessation ofequipment leads to huge loss of money in addition to sudden
repair cost of HDD. This indirect cost tends to be overlooked
but it never be a small cost.
Inquiry to Maker↓
Receive HDD↓
System installation↓
Data installation↓
Chamber maintenance↓
Test run[Below redundant cost occurs in case of HDD crash]
1. Scrap wafers
2. Tremendous system reconfiguration effort
3. Equipment restarting
4. Production down-time

In-direct loss : Calculated as 5 days of average equipment
cessation and JPN 10,000 labor cost per 1 hour
= 40H×10,000/H=¥400,000There is bigger possibility that system cessation continues several days dueto HDD crash. In the event that such trouble occurs at Only-One equipment
or unreplaceable tool, damage of production will be more severe.

Proposal of Dual HDD
SystemSignal of legacy
standard

In case old type HDD, equipment stops when
HDD crashes since it only equips single HDD.
It results on huge production loss.

(SCSI / IDE)

RAID
Control Unit

In case of Dual HDD, mounted two HDDs
realized halt torelant operation.

Signal ofpresent standard(SATA)HDD1

HDD2HDD can be replaced unilaterally.
Dual HDD System(connect/disconnect) while HDD is running.

Function of Dual HDD System[Feature]
OEM System

Dual HDD System

SystemSystem■Record data to two HDDs simultaneously⇒RAID1(Mirroring) function■Even though one HDD crashes, the other HDD
activates production equipment so there is noconcern about sudden HDD failure.

Signal of legacy
standard(SCSI / IDE spec)■In case of HDD crash

RAID
Control UnitSCSI / IDE
spec

HDD

Convert legacy
std signal into
latest signal
SATA spec

HDD1

HDD2

RAID System
HDD : expensive and rare

・Crashed HDD is replaceable while production isrunning.
・After replacement of one HDD, Data is
automatically recorded while production is running.
■HDD used for Dual HDD system is easily
obtainable and reasonable in the market.

Easy to obtain in market
Reasonable HDD (2pcs)

Number of installed Dual HDD system at semiconductor factories in the world isapproximately 6,000+ !

Dual HDD mountable equipment
A lot of process equipment as listed below still equip SCSI/IDE type HDD

1. Etching
2. WET・CMP
3. Diffusion・CVD
4. Ion implanter
5. Photolithography
6. EPI
7. PVD・Vaporization
8. Measurement
9. AssemblyFeature of Dual HDD
This is RAID 1 (Mirroring) control unit designed to be suited to 3.5 inch HDD. This unit equips two standard
communication spec of SATA (Serial ATA) type 2.5 inch HDDs internally and this special structure enables
equipment to prevent it from stopping even though one of two HDD unexpectedly crashes.
Then the unit also responds to “Hot-swap performance” so user can exchange one of 2.5 inch HDDs while
equipment is still running. When a 2.5 inch HDD is installed, copy of data from another HDD is automaticallystarted. Furthermore, accessible 2.5 inch HDD does not have volume restriction so user can procure
standard reasonable SATA HDD in the market very easily.

Use of contemporarycommunication
Standard(SATA)
2.5 inch HDD

Designed for
3.5 inch HDD size

Hot-swap enabled

Easy to makeBack-up disk

(Exchangeable during
electrical continuity )HDD swappable
during equipment running

SCSI/IDE typeCompatible to old PC

Automatic data
configuration only withunilateral HDD swap

No restriction ofSATA HDD volume(up to 2TB)

We propose you to use this Dual HDDunit
for test evaluation!
Epoch-making unit to avoid equipment cessation due to HDD crash

３ features
1. To avoid cessation of equipment
・HDD is swappable while equipment is running.
・Equipment does not stop though one of two HDD crashes.

２. Wider compatibility
・More than 6,000 unit installed in the world・Compatible to various processes (process/inspection equipment)

３. Reasonable maintenance cost・Easily obtainable HDD in the market (approximately JPN 10,000)
・Simply HDD replacement (connect and disconnect)