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| <title>Peritech systems, Frequently asked questions</title> | |
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| <td width="309" valign=TOP height="400"> <img src="graphics/pagenav.gif" valign=TOP width="309" height="411" border="0"usemap="#navig" name="map1"><a href="mailto:n.price@peritech.co.uk"><img src="graphics/emailbut.gif" width="150" height="19" border="0"></a> | |
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| <p><img src="graphics/solog.gif" width="349" height="141"> </p> | |
| <p> </p> | |
| <div align="center"><font face="Arial, Helvetica, sans-serif"><b><font size="5" color="#999999">FREQUENTLY | |
| ASKED QUESTIONS </font> </b></font> </div> | |
| <p><font size="3" face="comic sans ms, helvetica, arial, sans-serif,">This | |
| section has been compiled to provide answers to some of the regular questions | |
| which we receive from our customers.</font></p> | |
| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3">If | |
| you have a particular question in mind, please use the <a href="mailto:n.price@peritech.co.uk">send | |
| e-mail</a> now button opposite to submit it and we will endeavor to provide | |
| an answer. </font> </p> | |
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| <p><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a name="#Q1"></a><a href="#A1">What | |
| is DNS?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A2">What characters are valid for use in Domain Names?</a><br> | |
| </font></p> | |
| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><a href="#A3">What's | |
| a Proxy Server?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A4">What's the difference between hardware and software RAID?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A5">Is there a RAID system that doesn't lose performance under | |
| heavy write-update workloads?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A6">Is there a RAID system which can write protect against transient | |
| disc errors?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A7">I have an older Sun SPARC System. What is the most cost | |
| effective way to upgrade my system?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A8">How many UltraSPARC processors can I have in an Enterprise | |
| 3500 and Enterprise 4500?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A9">Do you recommend any laser printers for the Solaris Operating | |
| System?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A10">My budget does not allow for the purchase of new hardware, | |
| how can you help?</a><br> | |
| </font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| <a href="#A11">Do you offer leasing?</a><br> | |
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| <p><font size="3" face="comic sans ms, helvetica, arial, sans-serif," color="#0000CC"><a name="A1"></a>Answer:</font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><br> | |
| The main job of the name server is to provide information about a Domain | |
| or a Host. Every Host needs to know how to get to one place only.<br> | |
| <font color="#000000">At the top level is root. Underneath are net, org, | |
| com, edu, mil, int and gov; beneath these are the various Hosts. These | |
| name servers exchange data and initially new zone files were built on | |
| a daily basis to reflect the growing nature of the Internet. Soon more | |
| top level Domains were added including all country codes. The DNS is now | |
| a truly distributed system with servers spread throughout Europe and the | |
| rest of the World.</font></font></p> | |
| <p align="center"><img src="graphics/dns.gif" width="360" height="146"> | |
| </p> | |
| <p align="left"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font></p> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A2"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Capital letters A - Z<br> | |
| Lower case letters a - z<br> | |
| Numerals 0 - 9<br> | |
| Hyphen -<br> | |
| Dot .</font></p> | |
| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000">In | |
| particular ( _ ) (underbar) is not permitted.<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font></p> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A3"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| A Proxy Server is a dedicated machine which is set up to provide the connection | |
| between a company's LAN and the Iinternet.<br> | |
| It is set up so that when each client on the LAN wants to browse the Internet | |
| or pick up mail etc. a request is sent to the Proxy Server which carries | |
| out the task and sends the results back to the client making the request.<br> | |
| This is an excellent way to minimize configuration of each computer on | |
| the LAN and it serves as a very good security measure allowing the corporate | |
| LAN to keep its IP addresses invisible to the outside world.<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font></p> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A4"></a>Answer:</font></p> | |
| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000">With | |
| a hardware RAID configuration, all the computer sees is another single | |
| device. As far as the computer and its operating system is concerned it | |
| just has one big hard disk connected, this is because the hardware raid | |
| unit is self contained with disk management software, the disk controllers | |
| and the disks enclosed in one box. This box plugs into an available port | |
| or slot on the computer which is fooled into thinking that it is just | |
| a single device.</font></p> | |
| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000">With | |
| a software RAID configuration the computer will see each disk as an individual | |
| device so for example if a computer has 6 disks plugged in, then the computer | |
| will see 6 disks.<br> | |
| To set these up as a single RAID device, special RAID management software | |
| has to be purchased and installed and then configured to instruct the | |
| computer's operating system to treat these disks as a single RAID device.<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font></p> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A5"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Yes, the Baydel O/ESR RAID System has rock solid write performance because | |
| it employs fine granularity striping which means that all writes take | |
| place at high speed.</font><br> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A6"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Baydel O/ESR uniquely employs a real-time data integrity verification | |
| check which catches all disk error conditions and prevents database inconsistancies.</font></p> | |
| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000">see: | |
| <a href="http://www.baydel.com">www.baydel.com</a> <br> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A7"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Peritech Systems plc. holds over £1 million worth of Sun stock dating | |
| from the early 1990's through to the latest Workstations and Enterprise | |
| Servers. We can provide the most cost effective solution, from processor, | |
| disk, system board and memory upgrades to full system trade in.<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A8"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| 8 CPU's in the E3500, and up to 8Gb memory<br> | |
| 14 CPU's in the E4500, and up to 14Gb memory<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A9"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Yes, Lexmark Lasers are "Sun ready" and there are many models | |
| to choose from. Please call us for details.<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A10"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Peritech can offer a wide range of refurbished equipment for all requirements. | |
| Most of the hardware was previously on a lease and most systems are less | |
| than 1 year old. Refurbished hardware is a very cost effective way to | |
| make your budget go further.<br> | |
| </font><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="#Q1" >Back:</a></font></font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"> | |
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| <p><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#0000CC"><a name="A11"></a>Answer:</font><font face="comic sans ms, helvetica, arial, sans-serif," size="3" color="#000000"><br> | |
| Yes, in conjunction with the largest IT leasing company in Europe we can | |
| tailor a package to suit your requirements. In short, this package will | |
| enable you to maintain the leading IT hardware for a fixed monthly fee, | |
| allowing you to control costs. Also, there are tax benefits in leasing | |
| as opposed to outright purchase.<br> | |
| <a href="http://www.syscap.com">www.syscap.com</a></font><br> | |
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| <p align="center"><font size="3" face="comic sans ms, helvetica, arial, sans-serif,"><a href="tempfaq.htm" >Click | |
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