IBM 00FN332 Arkusz Danych Pobierz pdf (Strona 9)

IBM United States Hardware Announcement 114-135 IBM is a registered trademark of International Business Machines Corporation

give an estimate of the drive's remaining life based on the workload to which the

drive will be subjected. The TBW value assigned to a solid-state drive is the total

bytes of written data (based on number of P/E cycles) a drive can be guaranteed to

complete. Reaching this limit does not cause the drive to immediately fail; it simply

denotes the maximum number of writes that can be guaranteed.

A solid-state drive will not fail upon reaching the specified TBW. At some point based

on manufacturing variance margin, after surpassing the TBW value, the drive will

reach the end-of-life point, at which the drive will go into a read-only mode.

As a result of the technology limitations, care must be taken to use SSDs in

environments that will not exceed the TBW of the drive prior to the required life

expectancy of the application.

As an example, assume an access pattern of 50% random data and 50% sequential

data with block size mixes of 5% of the data is 4k block size, 5% of the data is 8k

block size, 10% of the data is 16k block size, 35% of the data is 64k block size, and

35% of the data is 128k block size. For a drive capable of 72 TB of lifetime writes,

assuming an approximation of the workload stated above as being worst case, the

drive workload must be limited to no more than 40 GB of writes per day to last five

years and stay inside the 72 TBW limit. For the device to last threes years, the drive

write workload must be limited to no more than 65 GB of writes per day.

Additional information is available at

http://www-03.ibm.com/systems/x/options/storage/solidstate/index.html

IBM's warranty for the device is limited to drives that have not reached the

maximum guaranteed number of program/erase cycles, as stated below. A drive

that reaches this limit may fail to operate according to its specifications.

Maximum warranted drive writes per drive is 0.38 Full Drive Writes per Day for 5

years or 165 TB TBW on the 240 GB SSD depending on workload and data patterns.

Maximum warranted drive writes per drive is 0.38 Full Drive Writes per Day for 5

years or 330TB TBW on the 480 GB SSD depending on workload and data patterns.

Maximum warranted drive writes per drive is 0.38 Full Drive Writes per Day for 5

years or 665 TB TBW on the 960 GB SSD depending on workload and data patterns.

User group requirements

This announcement satisfies or partially satisfies the requirements from one or

more of the worldwide user group communities. Groups include COMMON, COMMON

Europe, Guide Share Europe (GSE), InterAction (Australia/New Zealand), Japan

Guide Share (JGS), and SHARE Inc.

Planning information

Customer responsibilities

The new IBM SATA MLC Entry SSD products are designed as customer setup.

Customer installation instructions can be found in the Installation and User's Guide

for the system into which the drive is to be installed.

Cable orders

None

Installability

The IBM SATA SSDs require about 20 minutes for installation.

Installation includes unpacking, attaching a customer-provided line cord, setting up,

and powering on.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 17 18

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Trademark information

SOFTWARE LICENSE

Table of Contents

9. Troubleshooting 35

Specifications

Introduction

Steps required for setup

1. Setting the IP Address

IP ADDRESS

[ ] [ ] [ ][ ]

JOB STATUS

• Make sure that NETWORK

Mail server and DNS server

Setting Passwords

Scan to FTP (Hyperlink)

5. Scan to E-mail Setup

SCAN TO E-MAIL SET-UP

1:E-MAIL SUBJECT

2:E-MAIL SENDER

3:FILE FORMAT

Display:

SCAN TO E-MAIL

• FILE FORMAT

• MESSAGE

• Press and/or to

SPEED DIAL

Software Programs

♦ Saved in a folder

♦ Sent as e-mail

♦ Saved in Sharpdesk

Uninstalling a program

9. Troubleshooting

WARRANTY

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