SCSI is better, but not always

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Post #32,943

by tonytib

3/20/02 9:32:11 PM

SCSI is better, but not always

(Again, corrections and additions welcome)
IDE has been very upwards compatible for non-RAID systems, e.g. I can use ATA-33 drives with an ATA-100 controller, and ATA-100 drives with ATA-33 controllers.

OTOH, I interpret Andrew as saying that the IDE RAID controllers aren't that compatible, so a ATA-66 RAID controller might not work well with ATA-100 drives.

Many of the SCSI generations are compatible (SCSI-I/II/Ultra), but when SCSI went to LVD (SCSI-3? I know SCSI-160 is LVD), the newer (LVD) devices aren't compatible with the older (SE) devices, because the signaling voltages and methods are so different. However, I would expect SCSI-3 (80 MB/sec) and SCSI-160 to be pretty compatible, and most likely SCSI-320 as well.

Tony

3Ware RAID: add replacement drive to degraded array - (kmself) - (36) - March 15, 2002, 02:16:52 AM EST

Sounds like a card not drive problem to me. - (Another Scott) - (35) - March 15, 2002, 07:53:20 AM EST

Also-check the signal cable to the "bad" drive.Intermittent? -NT - (Another Scott) - March 15, 2002, 08:36:03 AM EST

Suspect you're right - (kmself) - March 15, 2002, 02:12:59 PM EST

JBOD v. RAID on new disk insertion - (kmself) - (32) - March 15, 2002, 04:56:43 PM EST

Re: JBOD v. RAID on new disk insertion - (morganek) - (31) - March 16, 2002, 01:50:55 PM EST

Following procedure...confirms bad card - (kmself) - (30) - March 17, 2002, 04:14:22 AM EST

Re: SCSI. - (a6l6e6x) - (29) - March 17, 2002, 04:05:17 PM EST

IDE RAID - (Andrew Grygus) - (28) - March 17, 2002, 05:04:34 PM EST

Interesting - (kmself) - (27) - March 17, 2002, 11:50:19 PM EST

Have you guys seen the discussion on IBM's 120GXP 10 hr/day? - (tonytib) - (26) - March 18, 2002, 01:30:27 AM EST

Heard about it, yeah -NT - (kmself) - March 18, 2002, 04:09:26 AM EST

Components - (Andrew Grygus) - (3) - March 18, 2002, 11:00:45 AM EST

Thanks -NT - (tonytib) - March 18, 2002, 02:43:02 PM EST

IDE, SCSI, and change - (kmself) - (1) - March 20, 2002, 09:19:40 PM EST

SCSI is better, but not always - (tonytib) - March 20, 2002, 09:32:11 PM EST

Re: IBM's 120GXP only 10 hr/day. - (a6l6e6x) - (20) - March 19, 2002, 11:04:16 PM EST

But they won't guarentee it for >3 years - (tonytib) - (19) - March 20, 2002, 08:01:20 PM EST

No disagreement from here. -NT - (a6l6e6x) - March 20, 2002, 08:57:25 PM EST

Highly erratic - (Andrew Grygus) - (1) - March 21, 2002, 12:17:57 AM EST

I especially love that last comment! -NT - (tonytib) - March 21, 2002, 11:28:38 AM EST

Interesting.... Very interesting... [RANT] not just at Tony - (folkert) - (15) - March 21, 2002, 09:15:46 PM EST

Greg, I've been looking at actuators for six years now - (tonytib) - (3) - March 21, 2002, 09:46:09 PM EST

Then why do we never here about... - (folkert) - (2) - March 21, 2002, 11:05:09 PM EST

Could be a bunch of reasons: - (Andrew Grygus) - March 22, 2002, 12:06:45 AM EST

Politics, IIRC - (tonytib) - March 22, 2002, 01:18:29 AM EST

Then what makes SCSI seem better? - (Brandioch) - (10) - March 30, 2002, 10:45:06 PM EST

The what! - (folkert) - (9) - March 30, 2002, 11:22:21 PM EST

Sounds good. - (Brandioch) - (8) - March 31, 2002, 03:24:08 PM EST

Well, it all depends... - (folkert) - (7) - March 31, 2002, 04:27:47 PM EST

Hey there, Greg - (Ashton) - (6) - March 31, 2002, 10:26:14 PM EST

OT: Tek scopes - (a6l6e6x) - (3) - March 31, 2002, 10:44:51 PM EST

Yeah.. imagine finding Art in a lab. - (Ashton) - (2) - April 1, 2002, 08:18:26 PM EST

Re: Yeah.. imagine finding Art in a lab. - (a6l6e6x) - (1) - April 1, 2002, 10:51:18 PM EST

Yup.. - (Ashton) - April 2, 2002, 12:39:05 AM EST

Hey there, Ashton - (folkert) - (1) - April 1, 2002, 12:14:08 PM EST

Good sleuthing and thanks for the tip - (Ashton) - April 1, 2002, 07:56:30 PM EST

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