4.0PERFORMANCE CHARACTERISTICS

This section provides detailed information concerning performance-related characteristics and features of Pulsar.2 drives. Note. Data provided is based on format at 512-bytes.

4.1INTERNAL DRIVE CHARACTERISTICS

Drive capacity

800400

200100

GB (formatted, rounded off value)

Flash Memory Type

NAND MLC

 

 

Emulated LBA Size

512, 520, 524, 528, 4096, 4160, 4192, or 4224

Native Programmable

 

 

 

Page Size

8192 User Bytes

 

 

Default Transfer

 

 

 

Alignment Offset

0

 

 

4.2PERFORMANCE CHARACTERISTICS

See Section 11.4.1, "SAS physical interface" and the SAS Interface Manual (part number 100293071) for additional timing details.

4.2.1Access time

Access measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:

•Page-to-page access time is an average of all possible page-to-page accesses in both directions for a sequentially preconditioned drive.

•Average access time is a true statistical random average of at least 5000 measurements of accesses between programmable pages on a randomly preconditioned drive.

Table 4 Typical Access Time (μsec)

 

 

800GB 1,2

400, 200, 100 GB 1,2

 

 

READ

WRITE

READ

WRITE

 

 

 

 

 

 

Average

 

293

137

227

120

 

Typical 3

 

 

 

 

Page to Page

62

136

60

120

Average Latency

 

273

 

206

 

 

 

 

 

 

 

1.Execution time measured from receipt of the Command to the Response.

2.Assumes no errors.

3.Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives.

Note. These drives are designed to provide the highest possible performance under typical conditions. However, due to the nature of Flash memory technologies there are many factors that can result in values different than those stated in this specification

2.

4.2.2FORMAT UNIT command execution time for 512-byte LBA’s (minutes)

The device may be formatted as either a Thin Provisioned device or a Fully Provisioned device. The default format is Thin Provisioned and is recommended for most applications. Thin Provisioning provides the most flexibility for the device to manage the flash medium to maximize endurance.

Table 5 Maximum FORMAT UNIT Times (minutes)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONFIGURATION

Format Mode

DCRT Bit

IP Bit

800GB

400GB

200GB

100GB

 

 

 

 

 

 

 

 

 

Non-SED

(Default) Thin Provisioned

DCRT = 0

IP = 0

5

5

5

5

 

 

 

 

 

 

 

 

 

 

Non-SED

(Default) Thin Provisioned

DCRT = 1

IP = 0

5

5

5

5

 

 

 

 

 

 

 

 

 

 

Non-SED

Fully Provisioned

DCRT = 0

IP = 1

430

130

70

60

 

 

 

 

 

 

 

 

 

 

Non-SED

Fully Provisioned

DCRT = 1

IP = 1

280

100

50

30

 

 

 

 

 

 

 

 

 

 

SED

(Default) Thin Provisioned

DCRT = 0

IP = 0

5

N/A

N/A

N/A

 

 

 

 

 

 

 

 

 

SED

(Default) Thin Provisioned

DCRT = 1

IP = 0

5

N/A

N/A

N/A

 

 

 

 

 

 

 

 

 

SED

Fully Provisioned

DCRT = 0

IP = 1

430

N/A

N/A

N/A

 

 

 

 

 

 

 

 

 

SED

Fully Provisioned

DCRT = 1

IP = 1

280

N/A

N/A

N/A

 

 

 

 

 

 

 

 

 

PULSAR.2 SAS PRODUCT MANUAL, REV. C

 

 

 

 

 

10

Page 15 Page 17
Page 16
Image 16
Seagate ST200FM0002 Performance Characteristics, 800GB 1,2 400, 200, 100 GB 1,2, Access time, Typical Access Time μsec
Page 15 Page 17

ST800FM0002, ST100FM0002, ST200FM0002, ST400FM0012, ST800FM0032 specifications

The Seagate ST100FM0012, ST800FM0012, ST400FM0042, ST400FM0002, and ST100FM0052 are high-performance hard drives designed for enterprise applications, offering advanced features and reliability for demanding workloads.

The ST100FM0012 is a 10TB hard drive that strikes a balance between capacity and performance. It utilizes a 7200 RPM spindle speed and features a 256MB cache, enabling efficient data access and enhanced read/write performance. With Seagate’s AgileArray technology, the ST100FM0012 is optimized for NAS environments, providing multi-drive reliability and error recovery.

The ST800FM0012 is an 8TB variant that shares many features with its 10TB counterpart but is tailored for organizations needing robust storage without reaching the highest tier of capacity. Its dual-plane rotational vibration technology minimizes vibration in multi-drive systems, ensuring sustained performance over prolonged use. This makes it an excellent choice for virtualization and data-intensive applications.

The ST400FM0042 offers a 4TB capacity suited for smaller enterprise needs or as a backup solution. With an impressive performance profile, including a 7200 RPM speed and 128MB cache, it accommodates both sequential and random workloads with ease. This drive stands out with its PowerChoice technology, allowing users to manage power consumption and reduce operational costs.

Another 4TB option, the ST400FM0002, is particularly designed for hybrid configurations, pairing the fast access of the hard drive with the speed of SSDs. It features Seagate's advanced thermal management technologies, ensuring optimal operating temperatures and performance stability during intensive workloads.

The ST100FM0052 rounds out the lineup with a 10TB capacity but is specifically aimed at surveillance applications. It supports a workload rate of 180TB per year, making it ideal for always-on recording scenarios. The drive is built with optimized firmware, which ensures enhanced performance in write-intensive environments, essential for video recording and security systems.

All these drives are equipped with Seagate’s proprietary technologies, including data recovery services and built-in data protection features, ensuring data integrity and security. The drives are built for durability, reliability, and high performance in mission-critical environments, making them indispensable components of modern enterprise data storage solutions. With capacities ranging from 4TB to 10TB, they cater to varying storage needs across different sectors.
Top Page Image Contents