Compaq External RAID Controller & Subsystem Infortrend Instrukcja Użytkownika Pobierz pdf (Strona 46)

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Storage Industry Overview

4. ATA/SATA RAID is on flying—steps into medium level market

ATA hard disc is usually used in desktop PC in the past, as compared to SCSI and

FC, the inherent spec limitation of ATA such as: stability, transmission distance,

efficiency, no. of hard disc it can be connected to, etc., make it difficult to replace the

need of SCSI and FC in the enterprise customer. However, the low cost advantage

of ATA satisfies the low price market needs, the global ATA hard disc sales is about

90%, however, in the hard disc market used by enterprise, ATA hard disc only

occupies a market share of 10%, SCSI hard disc is the current major storage media

used by most enterprise customer. The market analysts think that SATA hard disc

will replace old ATA market within 5 years and eat away SCSI’s hard disc market in

enterprise storage, after 2006, SATA is expected to exceed SCSI market. No only so,

under the strong promotion from giant player such as Intel as well as the long term

plan of three generations (1.5/ 3/ 6Gb), SATA is going to impact SCSI’s role in the

high level storage market in the future, the market expects that SATA in the short

term will gradually replace the role played by SCSI in the medium level hard disc

market, and starts to be used in some storage systems of medium sized enterprise,

take a look for the long term, some large sized enterprises’ storage systems will

adopt low cost SATA hard discs as storage media to keep the lowest unit storage

cost (the unit is each MB).

Market share forecast of global enterprise hard disc market (by interface)

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

2002 2003 2004 2005 2006

ATA/SATA

SCSI

SAS

Source: Dataquest, Hard Disk Drive Market, March 2002

5. FAS interface trend----the role and position of iSCSI and FC in SAN

The future market partition of FAS interface

iSCSI (prototype IP) FC (optical fiber over IP)

Target market 1. Medium and small

sized enterprise

2. Departments in large

sized enterprise

large sized enterprise

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