From: "Brian Montgomery" <bmontgomery@datarch.com>
To: <coghlan@cs.tcd.ie>
References: <380-220105312205238136@M2W123.mail2web.com> <4BEBACB1.4050801@cs.tcd.ie> <4BEBC1FC.9090807@cs.tcd.ie> <!&!AAAAAAAAAAAYAAAAAAAAAA8WIueJjMFMsUwdsf904nzCgAAAEAAAAFZcF4HTpZlJr0oeT588dzABAAAAAA==@datarch.com> <4BED0AB1.3020907@cs.tcd.ie> <!&!AAAAAAAAAAAYAAAAAAAAAA8WIueJjMFMsUwdsf904nzCgAAAEAAAAEvs7RcTHiREpDoeZkIl904BAAAAAA==@datarch.com> <4BED1A1A.5000209@cs.tcd.ie>
In-Reply-To: <4BED1A1A.5000209@cs.tcd.ie>
Subject: RE: Installation of  Nexsan equipment
Date: Fri, 14 May 2010 10:53:19 +0100
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Disposition-Notification-To: "Brian Montgomery" <bmontgomery@datarch.com>

Brian=20

Hitachi 2TB 7200 rpm  drives - additional overall cost =E2=82=AC2300 ex =
Vat=20

Maid 1 - Head spin down=20

Maid 2 - Reduce spin speed - 7200 to 5400=20

Maid 3 - Drive spin down=20

WD 2TB 5400 rpm drives - as quoted ( this is what DIAS and UCC are using =
)=20

Maid 1 - Head spin down ( automatic )=20

Maid 2 - Not supported - drives already running at 5400=20

Maid 3 - Drive spin down=20

Also to confirm site to site replication will be fully supported on =
either drive type=20

Can you confirm which drive you would like to proceed on.

Thanks

Brian=20


Brian Montgomery=20
Datarch Ltd=20
The Forge=20
Bakers Corner
Rochestown Avenue=20
Co. Dublin=20
Ireland=20

Tel : ++353 1 8881000
Fax: ++353 1 8881001
Mobile: ++353 87 2438227
E-mail: bmontgomery@datarch.com


-----Original Message-----
From: Brian Coghlan [mailto:coghlan@cs.tcd.ie]=20
Sent: 14 May 2010 10:39
To: Brian Montgomery
Cc: coghlan@cs.tcd.ie
Subject: Re: Installation of Nexsan equipment

Brian, can you list the MAID levels supported be each
   of the WD 2TB 5400rpm and Hitachi 7200rpm drives?
     Regards
        Brian

Brian Montgomery wrote:
> Brian=20
>=20
> Its not a show stopper - it just makes life easier not just for =
install- but
> ongoing - things like firmware updates- or problems /queries can be
> investigated quickly by Tech support - also the management ports give =
no
> access to the data itself and the three management ports can be =
completely
> segregated  from the three data highways and any TCD data.=20
>=20
> Finally  can  reconfirm that you  want the Nexsan fitted with the WD =
2TB
> 5400 rpm drives - this give you the MAID 1 - auto heads unload( not
> configurable  , and MAID 3 drive spin down , MAID 2 is not available =
as this
> is only available for Hitachi 7200 rpm drives .
>=20
> Let me know on this and I can proceed with the order .
>=20
> Thanks
>=20
> Brian=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> Brian Montgomery=20
> Datarch Ltd=20
> The Forge=20
> Bakers Corner
> Rochestown Avenue=20
> Co. Dublin=20
> Ireland=20
>=20
> Tel : ++353 1 8881000
> Fax: ++353 1 8881001
> Mobile: ++353 87 2438227
> E-mail: bmontgomery@datarch.com
>=20
>=20
> -----Original Message-----
> From: Brian Coghlan [mailto:coghlan@cs.tcd.ie]=20
> Sent: 14 May 2010 09:33
> To: Brian Montgomery; 'Geoff Quigley'; tom.kearney@cs.tcd.ie; 'David
> O'Callaghan'; 'John Walsh'; 'Stuart Kenny'
> Cc: coghlan@cs.tcd.ie
> Subject: Re: Installation of Nexsan equipment
>=20
> Brian, there is one issue with this. In general TCD does
>    not allow remote access from a non-TCD user - that's
>    firmly embedded in TCD IT policies. We can request
>    an external user be given SSH access , but this seems
>    too heavyweight here.
> Do you really need remote access ?
>    What do you suggest ?
>      Regards
>         Brian
>=20
> Brian Montgomery wrote:
>=20
>>Geoff=20
>>
>>There will be no problem here - we would be installing and doing  =
training
>>on the Nexsan units - the procedure is that we would usually install =
first
>=20
> -
>=20
>>rails power cables etc and do all the cabling  - we usually power up =
the
>>Nexsan unit and leave it sit for a day or so - the next stage is =
remote
>=20
> log
>=20
>>in - this way the Nexsan engineer can double check and verify that the
>=20
> unit
>=20
>>is set up correctly- at that stage we set up the hardware RAID and you =
can
>>let us know the way you might want the storage carved up - the i-400 =
head
>>will virtualise the storage and will allow for many combination of =
luns
>>snapshots and replication pairs  - we then set up a training schedule =
-
>=20
> this
>=20
>>may be done via a webinar or locally it depends on what suits best .
>>
>>We will need the following prior to install -=20
>>
>>At least 6U of rack space in a 600mm x 1000mm deep rack cabinet -
>=20
> preferably
>=20
>>in the lower part of the cabinet=20
>>
>>At least 30cm of working room both front and back of cabinet=20
>>
>>4 x clean 220V AC supplies - 2 x  C14 connection  directly from the =
mains
>>and 2 x C14 from a UPS ( 3- 5KVA)=20
>>
>>3 x RJ45 10/100 ports for management of the Nexsan devices - these =
should
>=20
> be
>=20
>>routed to allow access for remote login and configuration=20
>>
>>2 x RJ45 CaT 6 1000Gb for cnnection to the i-400 - these should be
>=20
> connected
>=20
>>to local traffic  high performance switches with flow control and =
Jumbo
>>frame support=20
>>
>>1 x RJ45 CaT 6 1000Gb for cnnection to the i-400 - this port is for
>=20
> external
>=20
>>replication to remote site and should be routed to allow for same .
>>
>>NB - All ports above must be segregated from standard IP traffic - =
either
>>using VLAN or a separate data switch !!
>>
>>I will be in touch later on to go through this .
>>
>>Best Regards
>>
>>Brian=20
>>
>>
>>
>>Brian Montgomery=20
>>Datarch Ltd=20
>>The Forge=20
>>Bakers Corner
>>Rochestown Avenue=20
>>Co. Dublin=20
>>Ireland=20
>>
>>Tel : ++353 1 8881000
>>Fax: ++353 1 8881001
>>Mobile: ++353 87 2438227
>>E-mail: bmontgomery@datarch.com

          Note the change in telephone code 608->896
**************************************************************
*  _/_/_/_/_/  _/_/_/  __/_/_/_/  Dr.B.A.Coghlan             *
*     _/     _/    _/  _/     _/  Dept.Computer Science      *
*    _/     _/        _/     _/   Trinity College Dublin     *
*   _/     _/        _/     _/    tel : (+3531).8961766      *
*  _/     _/    _/  _/     _/     fax : (+3531).6772204      *
* _/      _/_/_/  __/_/_/_/       email : coghlan@cs.tcd.ie  *
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