# Presentation: 516430

## Data Integrity Compilation

- Presented by: Al Schultz
- Location: PDS Management Council Meeting
-                 USGS
-                 Flagstaff, AZ
- Date:       July 8, 2008

## Primary Copy of Data Availability & DI

|  | GEO | Img1 | PPI | SBN | Rings | EN | NAIF |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Data Volume (TB) | 18.48 TB | 14 TB | 2 TB | 0.48 TB | 0.4 TB | 0.02 TB | 0.7 TB |
| Online Capacility (TB) | 30 TB | 27 TB (JPL) | 4 TB | 1.3 TB | 1.0 TB | 8 TB | 0.2 TB |
| % of Archive which is Online | 100% | 100% | 100% | 100% | 100% | 100% | 100% |
| Online Archive Method (e.g., RAID System) | RAID 5 | RAID | RAID | RAID 5 | RAID 50 | RAID | RAID |
| Schedule to perform Online Archive DI check (e.g., daily, weekly) | Monthly | None | Monthly | None | N/A | Per build | Monthly |
| Online Archive DI Checksum Type(s) (e.g., MD5) | MD5 | None | MD5 | MD5 | MD5 | CRC32 (catalog) | MD5 |

**1 – IN updating RAID arrays. Once complete, checksums assigned and checked monthly for errors***.*

## 2nd Copy of Data (Backup) Availability & DI

|  | GEO | Img | PPI | SBN | Rings | EN | NAIF |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Online Archive Backup Location | Server Room 2 | USGS(MM) GEO (Mer,Mex), Rings (Voy) | SDSC | Same room as RAID | Redwood, CA | UMD / EN | Iron Mountain, Co |
| Online Archive Backup Method (e.g., SDSC) | Copy | Media Exchange | SDSC near-line | rsync | 1TB Data Bricks | Rsync / tape | AIT |
| Online Archive Backup Schedule | With data release | As received | monthly | Nightly & weekly | Bi-monthly | Weekly / daily | Monthly & yearly |
| % Online Archive been Backed UP | 100% | USGS (<1%) GEO (73) Rings (<1%) | 100% | 100% | 100% | 100% | 100% |
| Schedule to perform Online Archive Backup copy DI check | Monthly | None |  | None | N/A | Only at primary | None |
| Online Archive Back up copy DI Checksum Type(s) | MD5 | None | MD5 | MD5 | N/A | N/A | N/A |

## 3nd Copy of Data (Backup) Availability & DI

|  | GEO | Img | PPI | SBN | Rings | EN | NAIF |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Deep Archive Location | Offsite, St. Louis | NSSDC | NSSDC | NSSDC | NSSDC | N/A | NSSDC |
| % of Deep Archive | 100% | 1% | 50% | Not known | 1% | N/A | 100% |
| Deep Archive Method (e.g., NSSDC Tape System) | LTD4 tape | CD copies | CD | Not known | NSSDC tape system | N/A | NSSDC tape system |
| Schedule to perform Deep Archive DI check | 4x per year | None | - | None | N/A | N/A | Once per 6 months |
| Deep Archive Checksum Types(s) | LTD4 built in | None | - | MD5 & CRC32 | N/A | N/A | MD5 |
| % Deep Archive DI Checked | 100% | None | 0% | Prior to delivery | 0% | N/A | 0% |

## PDS Node System

|  | GEO | Img | PPI | SBN | Rings | EN | NAIF |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Primary Location | WUSTL | JPL | UCLA | UMD | Mountainview, Ca | JPL-EN | JPL     Bld 230 |
| Backup Location | WUSTL & offsite | JPL | UCLA | Next to primary | Redwood City, Ca | JPL-EN | JPL     Bld 230 |
| Backup Method | tape | tape | tape | rsync | 1 TB Data Bricks | tape | RAID |
| Backup Schedule | Daily & 4x per year | daily | monthly | Weekly, bi-nightly | Bi-monthly | daily | N/A |
| Mirror Site Location | N/A | USGS Az GEO Node Rings Node | N/A | N/A | N/A | UMD | N/A |
| Mirror Test Schedule | N/A | None | N/A | N/A | N/A | Every 6 months | N/A |
| Mirror Backup Method | N/A | Unknown | N/A | N/A | N/A | Rsync | N/A |

## PDS Node Disaster Recovery

|  | GEO | Img | PPI | SBN | Rings | EN | NAIF |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Plan Approval Date | N/A | N/A | N/A | - | N/A | JPL annually | - |
| Plan Test Schedule | N/A | N/A | N/A | - | N/A | N/A | - |
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