HP3000-L Archives

July 2012, Week 3

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Subject:
From:
Larry Kaufman <[log in to unmask]>
Reply To:
Larry Kaufman <[log in to unmask]>
Date:
Mon, 16 Jul 2012 11:35:40 -0400
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You would need to find a SCSI SSD. They are out there, but not a lot of
choices. Here is something to consider: When a SSD fails, the failure is
likely to be catastrophic, with total data loss. HDDs can fail in this way
too, but often give warning that they are failing, allowing much or all of
their data to be recovered. Anyone remember when HP made the "silver back"
drives? They would make tons of noise for weeks, sometimes months, before
they would die.   
--
Larry Kaufman
Senior Systems Engineer

[log in to unmask]




On 7/16/12 10:22 AM, "Johnson, Tracy" <[log in to unmask]> wrote:

>Thanks Jack, understood.  Don't know if anyone has tried it on the HP3K
>yet.  Wouldn't even know if they could be configured.
>
>I added the last question only because I read in one top google searches
>the following quote:
>
>"SAS/SATA stacks, being designed for disks with millisecond latency,
>aren't optimized for the 50-microsecond latency of flash and are adding
>latency themselves."
>
>
>Tracy Johnson
>Office (757) 766-4318
>[log in to unmask]
>
>
>> -----Original Message-----
>> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
>> Behalf Of Jack Connor
>> Sent: Monday, July 16, 2012 10:09 AM
>> To: [log in to unmask]
>> Subject: Re: [HP3000-L] SSDs on HP3000s ?
>> 
>> I don't know of any yet, Tracy.  But the latency is normally due to
>> rotational delay and seek time so that should be all but gone with
>> solid state.
>> 
>> jack
>> 
>> -----Original Message-----
>> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
>> Behalf Of Johnson, Tracy
>> Sent: Monday, July 16, 2012 10:03 AM
>> To: [log in to unmask]
>> Subject: [HP3000-L] SSDs on HP3000s ?
>> 
>> So, is it viable yet to use SSD arrays on MPE?
>> 
>> Are they more reliable or less reliable than Hard Disc Arrays?
>> 
>> Is latency any better than hard disc?  (Since from what I
>> understand, they use the same kind of controllers.)
>> 
>> 
>> Tracy Johnson
>> Business Analyst
>> Measurement Specialties, Inc.
>> Office (757) 766-4318
>> [log in to unmask]
>> 
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