Which enclosure do you use?

Moderators: jhartley, MSR734, nola

Which enclosure do you use?

Post by carengel » Wed Sep 26, 2012 11:30 am

Hi all,

i'm wondering what kind of external enclosures and connections (USB3/Thunderbolt/Firewire) do you use? What is your speed experience?

Until i'll get my new MBP 13" my external enclosure (with USB3) is connected to an USB2 port of my mid. 2010 MBP. So i can't really speak about speed ;). Because Thunderbolt hardware is far to pricey at the moment (in my opinion) i'll buy an 4-drive USB3 enclosure.

May be there are new devices out there i never heard of.

Cheers
carengel Offline


 
Posts: 3
Joined: Sat Sep 15, 2012 4:38 am

Re: Which enclosure do you use?

Post by si-ghan-bi » Wed Sep 26, 2012 5:10 pm

I have an iMac 2007. Copying from USB 2 to fw800 36-37 MB/s, if I add a second copy from another USB 2 drive connected to the same hub I get 42 MB/s. These are the highest USB 2 transfer rates I have ever seen from USB 2!
If I use two USB 2 disks as source and the fw800 as destination, I should get around 70 MB/s.
Note: the sources are hfs+, only the destination is zfs.
si-ghan-bi Offline


 
Posts: 145
Joined: Sat Sep 15, 2012 5:55 am

Re: Which enclosure do you use?

Post by satadru » Wed Sep 26, 2012 6:02 pm

I have this http://www.datoptic.com/five-tray-less-bay-sii-3726-enclosure.html 5 bay enclosure attached via the included sata expresscard in my MacBookPro3,1. It works great, since the disks are setup as JBOD and I can just make zpools with multiple disks.

If I move to a thunderbolt machine, I can hopefully just move to a thunderbolt/sata interface that supports sata port multipliers or I can get a thunderbolt/expresscard adapter and stick in my existing sata expresscard.

(Note that the existing thunderbolt/sata adapters out there are not port multiplier compatible.)
satadru Offline


 
Posts: 20
Joined: Fri Sep 14, 2012 10:07 pm

Re: Which enclosure do you use?

Post by grahamperrin » Thu Sep 27, 2012 10:30 pm

Portable, for a variety of purposes

On this one, most reads and writes are sparse bundle disk images and for VirtualBox, virtual disk images:

Code: Select all
StoreJet Transcend:

  Capacity:   640.14 GB (640,135,028,224 bytes)
  Removable Media:   Yes
  Detachable Drive:   Yes
  BSD Name:   disk4
  Product ID:   0x2329
  Vendor ID:   0x152d  (JMicron Technology Corp.)
  Version:    0.00
  Serial Number:   322549FBA004
  Speed:   Up to 480 Mb/sec
  Manufacturer:   JMicron
  Location ID:   0x24100000 / 3
  Current Available (mA):   500
  Current Required (mA):   2
  Partition Map Type:   GPT (GUID Partition Table)
  S.M.A.R.T. status:   Not Supported
  Volumes:
    disk4s1:
      Capacity:   209.7 MB (209,715,200 bytes)
      BSD Name:   disk4s1
      Content:   EFI
    disk4s2:
      Capacity:   639.79 GB (639,791,054,848 bytes)
      BSD Name:   disk4s2
      Content:   ZFS


Static, currently for nothing other than backups

Code: Select all
GoFlex Desk:

  Capacity:   2 TB (2,000,398,933,504 bytes)
  Removable Media:   Yes
  Detachable Drive:   Yes
  BSD Name:   disk7
  Product ID:   0x50a5
  Vendor ID:   0x0bc2  (Seagate LLC)
  Version:    1.00
  Serial Number:   NA0LR3T7
  Speed:   Up to 480 Mb/sec
  Manufacturer:   Seagate
  Location ID:   0x26240000 / 6
  Current Available (mA):   500
  Current Required (mA):   0
  Partition Map Type:   GPT (GUID Partition Table)
  S.M.A.R.T. status:   Not Supported
  Volumes:
    disk7s1:
      Capacity:   209.7 MB (209,715,200 bytes)
      BSD Name:   disk7s1
      Content:   EFI
    disk7s2:
      Capacity:   2 TB (2,000,054,960,128 bytes)
      BSD Name:   disk7s2
      Content:   ZFS


carengel wrote:… What is your speed experience?


MacBookPro5,2 with 8 GB memory.

With the Seagate, soon after I gave it to ZEVO, I recall getting easily between 60 and 80 MB/s … something like that. (I might have screenshots etc. somewhere but if they coincided with an unreleased build of OS X it'll be inappropriate for me to share the details.)

Nowadays, speeds are not amazing. I wonder whether occasional or extended 'breaking' of free space thresholds had a negative impact. The 2 TB Seagate recently fell to less than 6 GB free when I was careless with send and receive.

Whilst the speeds aren't amazing, I'm very pleased with overall performance of the computer.
grahamperrin Offline

User avatar
 
Posts: 1596
Joined: Fri Sep 14, 2012 10:21 pm
Location: Brighton and Hove, United Kingdom


Return to General Discussion

Who is online

Users browsing this forum: ilovezfs and 1 guest

cron