29 Aug
2005
29 Aug
'05
11:58 a.m.
I heard somewhere that even if you are only using one drive, you should
STILL add a dummy drive in the second slot so that airflow is better. I
currently have two 9.1GB drives on my Ultra 2 and Solaris 10 is a pig. I am
planning on using one of my new drives for Solaris and still leave one of
the 9.1GB drives as /export/home. The other drive is going into my PC as a
dual Linux/Solaris installation along side my IDE-based Windows
installation...
Ram
-----Original Message-----
From: Doc Shipley [mailto:doc at mdrconsult.com]
Sent: Monday, August 29, 2005 2:47 PM
To: General at mdrconsult.com; On-Topic and Off-Topic Posts
Subject: Re: Help! Sun Ultra 1 HD replacement?
listmailgoeshere at gmail.com wrote:
Not necessarily. *Some* Ultra1 systems will accept a 1.6"
disk, but
some won't. That's a physical limitation of the backplane,
rail guides
and SCA connector, not a question of "supported configuration".
On 8/29/05, Ram Meenakshisundaram <RMeenaks at
olf.com> wrote:
>Just grab any 80-pin ultra scsi drive. Just be careful about heat
>dissipation though. I just bought two 73Gb scsi drives for
my Ultra 2
on ebay
for $150. Make sure whatever drive you buy that it is a 1"
height drive otherwise it will NOT fit in the drive cage.
Incorrect. The U1 drive cage will in fact hold a 1.6" drive in the
lower slot. I wouldn't want to run a 1.6" and a
1" together in there for heat
dissipation reasons (they will fit, I've tried, but they
end up *very*
close together), however if the machine only has
one disk in it, a
1.6" in the bottom slot will be fine.
Heat is likely to be an issue with 2 high-RPM disks, even
with a pair
of 1" drives. Air flow is side-to-side, so making sure there's ample
space on both sides of the system helps quite a lot.
Doc
29 Aug
29 Aug
1:29 p.m.
At 2:58 PM -0400 8/29/05, Ram Meenakshisundaram wrote:
I heard somewhere that even if you are only using one
drive, you should
STILL add a dummy drive in the second slot so that airflow is better. I
currently have two 9.1GB drives on my Ultra 2 and Solaris 10 is a pig. I am
planning on using one of my new drives for Solaris and still leave one of
the 9.1GB drives as /export/home. The other drive is going into my PC as a
dual Linux/Solaris installation along side my IDE-based Windows
installation...
Personally I'm of the opinion that you should always run a Sun system
with at least two drives. That way you can have your swap on
something other than your main disk.
BTW, along the lines of what fits and what doesn't, in an Ultra 60
you can put 2 1.6" drives with plenty of room. In a Sun 711
enclosure you can put either size in, but you can't put as many disks
in if you're using 1.6" high drives (they take this all into account
with how the SCA connectors are in the enclosure).
Personally most of my disks are in JBOD canisters that will take 1.6"
high speed disks and keep them nice and cool. Though I did have one
start to overheat a couple weeks ago when it was 92F+ in here (it was
at that point I realized they had a temp warning).
Zane
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh at aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
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| http://www.aracnet.com/~healyzh/ |
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