How do you plan on setting this up and why would you use ext4 when either zfs or btfrs seem to be better at larger volumes. I would lean more ZFS just due to all the redundancy built into it.
-----Original Message-----
From: Robert G. (Doc) Savage [mailto:dsavage@peaknet.net]
Sent: Saturday, April 27, 2013 10:12 PM
To: Michael Granito
Cc: silug-discuss@silug.org
Subject: RE: Partitioning >2.2 TB drives
On Sat, 2013-04-27 at 12:35 -0700, Michael Granito wrote:
> Doc,
>
> It could very well be an issue with USB adapter. Is there any way you
> could use esata?
Michael,
I should have thought of that. I have a Thermaltake BlacX eSATA+USB2 external "toaster", and with it gparted sees 3.64 TiB and can install a GPT partition table. It takes 25 minutes to create an ext4 filesystem.
# gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.4
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 7814037168 sectors, 3.6 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): A69992CB-B312-429F-A287-093EE78B5AB5
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 7814037134
Partitions will be aligned on 8-sector boundaries
Total free space is 5070 sectors (2.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 34 7814032064 3.6 TiB 0700
# df /mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 3845708116 200704 3650156612 1% /mnt
# df -h /mnt
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 3.6T 196M 3.4T 1% /mnt
If my math is correct, with these drives a fully-loaded Backblaze would have a capacity of about 133 TB. I'm also guessing it would weigh something like 80 lbs.
--Doc
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