What Does 18TB of Hitachi Hard Drives Look Like?
Posted: Tue May 11, 2010 9:50 am
As I mentioned in the 10TB post went for 2TB disks, hitachi looks to make some non raid disks many hardware raid power users like:
HDS722020ALA330
The package from Hitachi, the best I've seen:
Two of them came DOA. I returned them, and returned DOA again, due to lack of care in packaging. I'm still waiting my 2 left disks.
The server:
Asus P7F-C/SAS (3420)
Intel i5 750
2GB Kingston @ 667
LSI 9750SA + BBUi7
Promise TX4650
Performance of a RAID6 (write cache enabled) of 7 disks:
Reading from TX4650 (raid5 3TB) to the LSI 9750SA (raid6):
I forgot!
All numbers are with writecache on, rebuild/migrate and verify at full priority (Vs IO) (<-- lowest performance), Adaptative, Intelligent read cache, queueing, storsave: balance.
I highly recommend the 9750, but the managing software is quite confusing, promise software is better, but given his support: drivers/firmware (it took 3 years to make 4650 work properly), email/callcenters(
) I can't recommend their products (I've had some).
HDS722020ALA330
The package from Hitachi, the best I've seen:
Two of them came DOA. I returned them, and returned DOA again, due to lack of care in packaging. I'm still waiting my 2 left disks.
The server:
Asus P7F-C/SAS (3420)
Intel i5 750
2GB Kingston @ 667
LSI 9750SA + BBUi7
Promise TX4650
Performance of a RAID6 (write cache enabled) of 7 disks:
Reading from TX4650 (raid5 3TB) to the LSI 9750SA (raid6):
I forgot!
All numbers are with writecache on, rebuild/migrate and verify at full priority (Vs IO) (<-- lowest performance), Adaptative, Intelligent read cache, queueing, storsave: balance.
I highly recommend the 9750, but the managing software is quite confusing, promise software is better, but given his support: drivers/firmware (it took 3 years to make 4650 work properly), email/callcenters(
) I can't recommend their products (I've had some).
