[DNA man]

I'm still in the postion where I am just about to buy one of the new PM.( think it will be the dual 867). I know, just go and buy it you say!

My question is that: at work they are offering a 10,000rpm 4.7G HD for free. I think that the HD has a SCSI interface. Now for the dumb question. When I buy the PM, can I pop this fast HD into the tower without any 'extras'? I figured that I could intall my OS on the HD for an added speed increase. Or do I have to buy some internal stuff to run to be able to install the HD?

[nana4]

Any 10K 4.5GB hard drive that work may have lying around is going to be very slow indeed. They haven't made any of those for a couple of years. Apple also haven't had integrated SCSI for quite a while now, so you would need to get a SCSI adaptor card. Given that any recent IDE drive would be faster, there's not much point. Now if it were an 18GB Atlas 10K III, then I would say go for it. Have you got the model details?

[Zimmerman]

A mac hasn't shipped with stock SCSI since the Beige G3's. You will definatly need a SCSI controller. I don't know what kind of controller would best take advantage of the throughput that drive could use, but Apple has a $49 Ultra SCSI card that you can buy along with your Mac. If I am not mistaken, that card is an Adaptec Power Domain 2940UW - 40mb/sec transfer. It is a very fast card, however I don't know the data transfer from the drive.

If the drive is a regular 3.5", it will fit in just fine. If it is one of the older full width drives, I don't know but I think you will have to sacrifice on of your two precious 5.25" bays.

But this might not be an issue since you get the DVD-ROM/CD/RW Combo drive.

[passmaster16]

As the other posters have already mentioned, you would need a SCSI pci card in order to run that drive. IDE drives are coming down in price so much that I'm not sure it would be worth going to the trouble of getting a card and installing the drive.

-Josh

[DNA man]

Cheers for the feed back. I don't have the full details of the drive to hand but I shall make a note of the details today (about to leave for work in a few min). I think that the drive is on the old side and hence, this is the reason as to why the drive is on offer.

I shall post again soon.
Thanks,
DNA man

[raskol]

How exactly is a 10k RPM drive going to be very slow? It may not be blazing but I'll bet it is an original Seagate Cheetah. I don't think it is worth buying a SCSI card though. That used 4GB drive is worth about $20. And not big enough to install OSX on! :-)

[DNA man]

I have finally got around to posting the specs (see below). It appears from the Seagate web site that the drive is 7200 and not 10 000. Formatted it is only 4.3G so it probably isn;t worth using, is it?

_


_

__

Specifications for ST-15150N
This text file can be obtained by ftp. ASCII linedraw characters are used that display normally in textmode. Windows based environments can use the Letter Gothic Line TrueType font to display and print ASCII linedraw characters.



SEAGATE TECHNOLOGY, INC.
1-800-SEAGATE
http://www.seagate.com
(C)opyright 1993



ST-15150N SCSI-2 Fast (Barracuda 4)

+-----------+ J01-----+ 1-+ -------J4-1--------------+
| REAR VIEW | (see +-|+ |"| |
+-----------+ below)+--+ |"| |
|"|J4 1-11 |
|"|(see detail below) |
|"| |
(TOP) +"+-J4-11+ |
+-------------------------+/---------\ | |
-+::::::::::::::::::::::::1+| 0 0 0 0 +- | |
+----------------------|--++-5-G-G-12+ | 5 1
50 pin I/O Cable Connection-+ : : : : : : : : : : :
| | | | | | | | 6 | 2
SCSI ID = 0 (none) | | | | | | | | | | |
SCSI ID = 4 -------+ | | | | | | | | | |
SCSI ID = 2 ---------+ | | | | | | | | |
SCSI ID = 1 -----------+ | | | | | | | |
Reserved (default OFF) --------+ | | | | | | |
Parity Disable ------------------+ | | | | | |
Enable Motor Start ----------------+ | | | | |
Delay Motor Start (10 sec * ID) -----+ | | | |
Write Protect Enable ------------------+ | | |
Remote LED Connector --------------------+ | |
[pin-5 cathode (neg), pin-6 anode (pos)] | |
Reserved (default OFF) --------------------+ |
Spindle Synch Cable Connector ---------------+
(pin-1 SSREF, pin-2 ground)

+- ST-15150N only ------------------------+
| J01 - Terminator Power 2x3 jumper block |
+-----------------------------------------+
2+-+
Enable Drive Terminators |°|° °
1+°+° °

Terminator power from the drive. +---+
(default) °+°-°+
1° ° °

Terminator power from pin 26 on the +-+
SCSI bus. ° °|°|
1° °+°+

Terminator power to the SCSI bus on +-+
pin 26 °|°|°
1°+°+°

Terminator power to the SCSI bus and +-+-+
drive. °|°|°|
1°+°+°+

Note: ST-15150ND (differential model) does not come with any
provision to use Termination resistors. Therefore, SCSI bus
needs to be externally terminated.

+- ST-15150ND only -----------------------+
| J01 - Terminator Power 2x2 jumper block |
+-----------------------------------------+
1+-+ 2
Terminator to the SCSI bus on pin 26. |°|°
(all other J01 jumper positions are +°+°
invalid)


ST-15150N


UNFORMATTED CAPACITY (MB) ________________5062
FORMATTED CAPACITY (xx SECTORS) (MB) _____4294
AVERAGE SECTORS PER TRACK ________________107 rounded down
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________77,931
CYLINDERS ________________________________3,711 user
HEADS ______PHYSICAL______________________21
DISCS (3.5 in) ___________________________11
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec)________47.4 to 71.9
EXTERNAL TRANSFER RATE (mbyte/sec) _______4 Async
EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
SPINDLE SPEED (RPM) ______________________7,200
AVERAGE LATENCY (mSEC) ___________________4.17
BUFFER ___________________________________1024 KByte
Read Look-Ahead, Adaptive,
Multi-Segmented Cache
INTERFACE ________________________________SCSI-2 FAST
ASA II
BYTES PER TRACK __________________________64,773 average
SECTORS PER DRIVE ________________________8,388,315
TPI (TRACKS PER INCH) ____________________4,048
BPI (BITS PER INCH) ______________________73,820
AVERAGE ACCESS (ms) (read/write)__________8.0/9.0
Drive level without controller overhead
SINGLE TRACK SEEK (ms) ___________________0.6/0.9
MAX FULL SEEK (ms) _______________________17/19
MTBF (power-on hours) ____________________800,000
SHOCK (G's):
operating (Read/Write) __________2
nonoperating ____________________50
ACOUSTICS (typ/max dBA) __________________4.7/
POWER DISSIPATION (watts/BTUs) Active ____15/51
Idle ______12/41
POWER REQUIREMENTS: +12V START-UP (amps) _2.18
+12V TYPICAL (amps) __0.83 idle
+5V START-UP (amps) __1.0
+5V TYPICAL (amps) ___0.76 idle
IDLE (watts) _________14
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________0 or NONE

Physical:
Height (inches/mm): 1.63/41.4
Width (inches/mm): 4.00/101.6
Depth (inches/mm): 5.97/151.6
Weight (lbs/kg): 2.3/1.04

Already low-level formatted at the factory with 9 spare sectors
per cylinder and 1 spare cylinder per unit.

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product
offerings or specifications. (09/18/96)


Copyright © 2001, Seagate Technology | Privacy Policy | Legal