Fujitsu 36.7GB MAN3367MP different sizes?

Hello,

I am in need of advice. I needed a replacement drive for a RAID 5
that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
from prioritycomputerparts.com but when I tried to make it a hotspare,
I was informed that the drive was too small. The capacity showing up
in the controller card's bios was in deed smaller than the other
drives in the array (35044MB).

Can someone please tell me how many flavors this drive comes in? I've
seen it listed as 36GB, 36.4GB, and 36.7GB. I purchased the one
listed as 36.7. Was it mislabeled? How can I be sure I'm buying a
suitable replacement drive?

I'm stuck on a degraded array right now, so please help soon. Thank
you.

Mike

mrceolla@gmail.com wrote:
> Hello,
>
> I am in need of advice. I needed a replacement drive for a RAID 5
> that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
> from prioritycomputerparts.com but when I tried to make it a hotspare,
> I was informed that the drive was too small. The capacity showing up
> in the controller card's bios was in deed smaller than the other
> drives in the array (35044MB).
>
> Can someone please tell me how many flavors this drive comes in? I've
> seen it listed as 36GB, 36.4GB, and 36.7GB. I purchased the one
> listed as 36.7. Was it mislabeled? How can I be sure I'm buying a
> suitable replacement drive?
>
> I'm stuck on a degraded array right now, so please help soon. Thank
> you.

I've noticed this with some 36GB disks- they're either 36.4 or 36.7GB, according to HP
SmartArray controllers. Luckily for me, disks OEMed to HP are the 36.4GB ones, so pretty
much any non-OEMed disk will work without the problem you're having.

Worst case you can add a 72GB disk as a spare, and recover it later on if you get the
correct sized drive.

mrceolla@gmail.com wrote in
news:1189979156.096317.122860@n39g2000hsh.googlegr oups.com
> Hello,
>
> I am in need of advice. I needed a replacement drive for a RAID 5
> that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
> from prioritycomputerparts.com but when I tried to make it a hotspare,
> I was informed that the drive was too small.

> The capacity showing up in the controller card's bios
> was indeed smaller than the other drives in the array

> (35044MB).

35044*1024*1024*B = 36,746,297,344B = ~36.74GB
That 'appears' to be within spec.

> Can someone please tell me how many flavors this drive comes in?

One.

> I've seen it listed as 36GB, 36.4GB, and 36.7GB.

Should be 36.74GB according to Fujitsu.

71,771,688 sectors according to it's specs.
71,771,688*512 = 36,747,104,256 Bytes = ~36.74GB

> I purchased the one listed as 36.7. Was it mislabeled?

Nope (well, kinda).
36GB and 36.7GB are both acceptable (no rounding).

> How can I be sure I'm buying a suitable replacement drive?

Apparently not.

>
> I'm stuck on a degraded array right now, so please help soon.
> Thank you.
>
> Mike

Cydrome Leader wrote in news:fcl4o0$rek$1@reader1.panix.com
> mrceolla@gmail.com wrote:
> > Hello,
> >
> > I am in need of advice. I needed a replacement drive for a RAID 5
> > that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
> > from prioritycomputerparts.com but when I tried to make it a hotspare,
> > I was informed that the drive was too small. The capacity showing up
> > in the controller card's bios was in deed smaller than the other drives
> > in the array (35044MB).
> >
> > Can someone please tell me how many flavors this drive comes in?
> > I've seen it listed as 36GB, 36.4GB, and 36.7GB. I purchased the one
> > listed as 36.7. Was it mislabeled? How can I be sure I'm buying a
> > suitable replacement drive?
> >
> > I'm stuck on a degraded array right now, so please help soon.
> > Thank you.

> I've noticed this with some 36GB disks- they're either 36.4 or 36.7GB,
> according to HP SmartArray controllers. Luckily for me, disks OEMed
> to HP are the 36.4GB ones, so pretty much any non-OEMed disk will
> work without the problem you're having.

>
> Worst case you can add a 72GB disk as a spare, and recover it later on
> if you get the correct sized drive.

That would be 'worst case' (costly) indeed.
How about just shortstroking the bigger drives to the size of the smallest one.

Thanks for the input guys.

35044MB is the size of the two remaining drives. The replacement
drive is a lower number than that, but I did not write it down.

Cydrome...so any non-OEM disk should be the larger version? Is this
an educated guess or fact?

Folkert, how does one shortstroke a drive? My controller is an
Adaptec 2110S. Can I "shortstroke" the two remaining drives w/o
loosing my existing RAID 5? Also, you say the drive only comes in one
flavor, but why the different sizes?

Thanks for the help. I really appreciate it.

Mike

> I am in need of advice. I needed a replacement drive for a RAID 5
> that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
> from prioritycomputerparts.com but when I tried to make it a hotspare,
> I was informed that the drive was too small. The capacity showing up
> in the controller card's bios was in deed smaller than the other
> drives in the array (35044MB).
>
> Can someone please tell me how many flavors this drive comes in? I've
> seen it listed as 36GB, 36.4GB, and 36.7GB. I purchased the one
> listed as 36.7. Was it mislabeled? How can I be sure I'm buying a
> suitable replacement drive?
>
> I'm stuck on a degraded array right now, so please help soon. Thank
> you.
>
> Mike
>

Rather than waste more time trying to find exactly the right replacement
drive, my suggestion is that you backup your existing array, create a new
array using the disks you already have and the slightly smaller one you've
already bought, restore from backup, and your father's brother is someone
called Robert.

The new array will automatically size itself to its smallest member, so it
will be slightly smaller than the old array.

mrceolla@gmail.com wrote in
news:1190038160.468313.93550@n39g2000hsh.googlegro ups.com
> Thanks for the input guys.

> 35044MB is the size of the two remaining drives.

So these are the real deal.

> The replacement drive is a lower number than that,

So this isn't the Fujitsu retail or Fujitsu OEM version.

> but I did not write it down.

Shame on you.

>
> Cydrome...so any non-OEM disk should be the larger version?
> Is this an educated guess or fact?

> Folkert, how does one shortstroke a drive?

Using SCSI setup utilities.
Some require ASPI (scsitool, codeupdt) another is Windows 9x/ME
only (WD SCSI bench) and there is SCU (Windows and Lunix).

> My controller is an Adaptec 2110S.

Which apparently there is no ASPI for.

> Can I "shortstroke" the two remaining drives w/o loosing my existing RAID 5?

Not entirely sure.
Depends on whether the RAID meta data is stored in the last sectors or not.
Better to make a backup first. Which -of course- you should have anyway.

> Also, you say the drive only comes in one
> flavor, but why the different sizes?

There shouldn't be any different sizes.
Presumably your replacement is a major PC maker OEM'ed drive.
One way to find out may be to check your warranty.
Checking part numbers with Google may be another.

>
> Thanks for the help. I really appreciate it.
>
> Mike

Folkert Rienstra <see_reply-to@myweb.nl> wrote:
> Cydrome Leader wrote in news:fcl4o0$rek$1@reader1.panix.com
>> mrceolla@gmail.com wrote:
>> > Hello,
>> >
>> > I am in need of advice. I needed a replacement drive for a RAID 5
>> > that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
>> > from prioritycomputerparts.com but when I tried to make it a hotspare,
>> > I was informed that the drive was too small. The capacity showing up
>> > in the controller card's bios was in deed smaller than the other drives
>> > in the array (35044MB).
>> >
>> > Can someone please tell me how many flavors this drive comes in?
>> > I've seen it listed as 36GB, 36.4GB, and 36.7GB. I purchased the one
>> > listed as 36.7. Was it mislabeled? How can I be sure I'm buying a
>> > suitable replacement drive?
>> >
>> > I'm stuck on a degraded array right now, so please help soon.
>> > Thank you.
>
>> I've noticed this with some 36GB disks- they're either 36.4 or 36.7GB,
>> according to HP SmartArray controllers. Luckily for me, disks OEMed
>> to HP are the 36.4GB ones, so pretty much any non-OEMed disk will
>> work without the problem you're having.
>
>>
>> Worst case you can add a 72GB disk as a spare, and recover it later on
>> if you get the correct sized drive.
>
> That would be 'worst case' (costly) indeed.
> How about just shortstroking the bigger drives to the size of the smallest one.

That's a good idea. He should stop his raid array, and short stroke each
funcioning drive to the size of his replacement, then turn everything back
on.

mrceolla@gmail.com wrote:
> Thanks for the input guys.
>
> 35044MB is the size of the two remaining drives. The replacement
> drive is a lower number than that, but I did not write it down.
>
> Cydrome...so any non-OEM disk should be the larger version? Is this
> an educated guess or fact?

I can't say for certain which disks will be larger- it's sort of weird the
sizes vary at all in the first place.

> Folkert, how does one shortstroke a drive? My controller is an
> Adaptec 2110S. Can I "shortstroke" the two remaining drives w/o
> loosing my existing RAID 5? Also, you say the drive only comes in one
> flavor, but why the different sizes?

This short stroking suggestion is stupid. in this case, it's too late for
you, since you raid group already exists, but in most controllers, when
creating a new raid group, you can set aside space that will compensate
for differences in disk size. I don't recall off hand if there's a special
way to do this on DPT/adaptec controllers aside from don't use all free
space on the disk itself.

BTW, a 72B disk doesn't cost that much more than a 36GB one, expecially
when you figure out how much time/data you stand to lose if another drive
fails.

If you can provide exact disk sizes, I can compare to some off the shelf
and OEM to HP disks. Maybe we can figure out a drive that will work for
you.

Folkert Rienstra <see_reply-to@myweb.nl> wrote:
> mrceolla@gmail.com wrote in
> news:1189979156.096317.122860@n39g2000hsh.googlegr oups.com
>> Hello,
>>
>> I am in need of advice. I needed a replacement drive for a RAID 5
>> that consisted of 3 Fujitsu 36.7GB MAN3367MP drives. I bought one
>> from prioritycomputerparts.com but when I tried to make it a hotspare,
>> I was informed that the drive was too small.
>
>> The capacity showing up in the controller card's bios
>> was indeed smaller than the other drives in the array
>
>> (35044MB).
>
> 35044*1024*1024*B = 36,746,297,344B = ~36.74GB
> That 'appears' to be within spec.
>
>> Can someone please tell me how many flavors this drive comes in?
>
> One.

You don't know this.

There have been cases of fujitsu drives leaving the factory with weird
formatted sizes and other settings that should not have happened. The
results to the end users were incredible failure rates, a recall and
eventually firmware to fix drives in the field.

>> I've seen it listed as 36GB, 36.4GB, and 36.7GB.
>
> Should be 36.74GB according to Fujitsu.
>
> 71,771,688 sectors according to it's specs.
> 71,771,688*512 = 36,747,104,256 Bytes = ~36.74GB
>
>> I purchased the one listed as 36.7. Was it mislabeled?
>
> Nope (well, kinda).
> 36GB and 36.7GB are both acceptable (no rounding).

Here's data from SEAGATE disks OEMed to Sun:

72GB "street" size, real size 73400057856 bytes.

I find the exact same size for Fujtsu drives also OEMed to Sun.

and a proliant with HP 36GB disks, no RAID under solaris:

Vendor: HP Product: LOGICAL VOLUME Revision: 2.68 Serial No:
Size: 36.41GB <36414750208 bytes>

I'm not sure if there is still metadata on a non-mirrored disk under a
smart array controller, and we're seeing less than real capacity of the
drive.

I can check some IBM and Hitachi disks later today.