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- From: scs@lokkur.dexter.mi.us (Steve Simmons)
- Subject: SUMMARY: 1 GB 3.5" SCSI disks redux
- Message-ID: <1992Nov19.214514.7622@lokkur.dexter.mi.us>
- Organization: Inland Sea
- References: <1ec0usINNhir@usenet.INS.CWRU.Edu>
- Date: Thu, 19 Nov 92 21:45:14 GMT
- Lines: 145
-
- This is an expansion of the original article on 1+GB 3.5 SCSI disks as
- written by Aydin Edguer (edguer@ces.cwru.edu) a few days ago. I asked
- Aydin for some other data points on power and heat, and he very kindly
- supplied them. This post incorporates that new data and is otherwise
- unchanged from his original. I have done a bit of reformatting to
- (I hope) make the new data more readable.
-
- Steve Simmons
- Inland Sea
- scs@lokkur.dexter.mi.us
-
- =========================================================================
-
- There are at least seven models that are available now or will be available
- shortly. There are also a few 1.2/1.3 GB (formatted) disk drives
- (IBM 0663 E15, DEC DSP3160) available.
-
- DEC DSP3105, Fujitsu 2694S, HP C2247, IBM 0663 model E12, Maxtor MXT1240S,
- Micropolis 2112, and Seagate ST11200N. The Fujitsu is just being released
- in the U.S. The Maxtor is due out in quantity by the end of the year.
-
- You can contact some of the vendors directly for datasheets and vendor
- information:
- Fujitsu +1-800-626-4686
- Hitachi +1-800-HIT-ACHI
- Maxtor +1-800-2MA-XTOR
- Micropolis +1-800-395-3748
- Seagate +1-800-468-3472
-
- DISK LIST:
-
- Vendor: DEC HP Seagate
- Model: DSP3105 C2247 ST11200N
- Interface: Fast SCSI-2 Fast SCSI-2 Fast SCSI-2
- Drive RPM: 5400 5400 5400
- MTBF: 250,000 300,000 300,000
- Capacity: 1.05GB 1.05GB 1.05GB
- Max seek time: 20 ms 25 ms 26 ms
- Track-to-track: 1 ms 2.5 ms 1.9 ms
- Error corr: 264bit ECC ??bit ECC ??bit ECC
- Cache size: 512KB 256KB 256KB
- Warranty: Varies 5 year 5 year
- Noise: 39dBA@0.5m 37dBA@1ft 33dBA@(1ft?)
- Power consumption (amps)
- +12vdc avg/typ: 0.85 0.45/0.8 0.5
- +12vdc max: ?? 2.6 2
- +5vdc avg/typ: 0.71 1.0 0.24
- Heat dissipation (watts)
- average (idle) 11.2 10.5 9
- typical (active) 13.7 14.5 ??
- unspecified ?? ?? ??
-
- Vendor: Micropolis IBM
- Model: 2112 0663 model E12
- Interface: Fast SCSI-2 Fast SCSI-2
- Drive RPM: 5400 4317
- MTBF: 200,000 500,000
- Capacity: 1.05GB 1.04GB
- Max seek time: 25 ms 18.9 ms
- Track-to-track: 1.5 ms 0.6 ms
- Error corr: 64bit ECC ??bit ECC
- Cache size: 512KB 256KB
- Warranty: 5 year 5 year
- Noise: 35dBA@1ft 34dBA@1m
- Power consumption (amps)
- +12vdc avg/typ: 0.6 0.45
- +12vdc max: 2.2 2.7
- +5vdc avg/typ: 0.8 1.1
- Heat dissipation (watts)
- average (idle) ?? ??
- typical (active) ?? ??
- unspecified 12 10.9
-
- Vendor: Maxtor Fujitsu
- Model: MXT1240S 2694S
- Interface: Fast SCSI-2 Fast SCSI-2
- Drive RPM: 6300 4400
- MTBF: 300,000 300,000
- Capacity: 1.05GB 1.08GB
- Max seek time: 20 ms 22 ms
- Track-to-track: 1.5 ms 2.5 ms
- Error corr: 88bit ECC 64bit ECC
- Cache size: 256KB 256KB
- Warranty: ??? 5 year
- Noise: 30dBA@1ft 43dBA@1m
- Power consumption (amps)
- +12v avg/typ: 0.79 0.5
- +12vdc max: 2.5 2.0
- +5vdc avg/typ: 0.81 1.1
- Heat dissipation (watts)
- average (idle) ?? ??
- typical (active) ?? ??
- unspecified 13 ??
-
-
- COMMENTS:
-
- DEC was said to be very fast but tended to be "noisy" and ran "hot", perhaps
- too hot to be used internally. The warranty on DEC drives vary by distributor.
-
- HP was said to be a reliable drive but also expensive. HP gives it
- a 5 year warranty.
-
- Seagate gives a 5 year warranty - little was said about the drive. A Seagate
- spec sheet that listed the rotational speed as 4500 RPM was accidentally
- released. The proper speed is 5400 RPM and current spec sheets have been
- updated to reflect this.
-
- Micropolis gives a 5 year warranty - it also tended to be the lowest priced.
- Beta versions of the drive were said to have compatibility problems but
- production versions are supposed to have no problems.
-
- IBM gives a 5 year warranty - was said to be a quiet reliable drive.
-
- Maxtor is supposed to be fast and looks like the fastest in term of maximum
- sustained transfer rate [6300 RPM]. Not yet available so compatibility and
- pricing are not yet known.
-
- Fujitsu has been selling its drive overseas for a while. Fujitsu America
- is just releasing the drive in the U.S. No one who owned one commented.
-
- The type of supplied by vendors for power ratings tends to vary, hence
- the many ?? entries in those categories.
-
-
- DISTRIBUTORS LIST:
-
- StorNet 216 368-2801 Seagate
- Unison 508 879-3200 Micropolis [DEC]
- NPI 708 325-4151 Micropolis
- CoComp Inc 800 658-5981 IBM
- Artecon 800 872-2783 DEC (1 yr)
- R-Squared 800 777-3478 DEC (2 yr) [Micropolis,Seagate]
- Concorde 800 322-1303 DEC
- SelTech 216 338-3663 Seagate [Micropolis]
- Anthem Tech 800 359-9877 HP [Seagate]
- Aviv 617 270-6900 DEC
- Cranel 800 288-3475 Seagate [Fujitsu,HP]
- Rave Computer 800 966-7283 IBM
- WT 800 882-0007 HP
- Western Science 800 443-6699 Seagate
- NCA Periphs 408 739-9010 -
- --
- "When Dexter's on the Internet, can Hell be far behind?"
- -- Steve Simmons, scs@lokkur.dexter.mi.us
-