Hey Joyent and every other smartos user.
We are trying to narrow down a few of our hardware choices to meet our
requirement.
Our requirements is well defined and we know exactly what we expect from
the proposed array.
We have barely any CPU power necessary so a single quad core is enough for
us.
Requirements:
- Write operations:* (24/7)*
- *Approx 200 consecutive writes each write at 5mbit/s *
-
*[Total: 125MB/s writes] *
- Read operations (*150 consecutive reads* is the UPPER limit, might
be less).
- Approx 150 consecutive reads each read at* 5mbit/s*
- [Total: *93MB/s reads*].
- Storage capacity 15TB of actual space (Not counting space lost to
RAIDZ levels or mirrored vdevs)
Our proposal is:
- E5-1620v2 (Quad 3.7ghz Xeon)
- 128gb of DDR3 ECC REG RAM
- SAS Disks from HGST (Count and Size of each drive to be determined)
- Proposed drive HGST SAS HUS724040ALS640
- ZFS "sync" setting set to disabled. Data loss is not an issue for us,
we only care about performance.
- Dedupe off, compression off (We're saving video)
- ZIL is unnecessary because of "sync" disabled.
- RAIDZ level? We are unsure.
Given these parameters, and the experience joyent has had with HGST 4TB SAS
drives. How large of an array, and what RAIDZ or mirrored vdev
(raid10-like) would I require to be able to meet my above mentioned
requirements?
Regards,
--
Ibrahim Tachijian
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